{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-57020", "tracking": { "current_release_date": "2026-09-30T21:00:58.013214Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-57020", "initial_release_date": "2026-07-08T18:41:23.197484Z", "revision_history": [ { "date": "2026-07-08T18:41:23.197484Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (5).| Product Remediations created (1).| Vendor_assessment created." }, { "date": "2026-07-08T18:41:29.943060Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-07-09T03:41:57.661978Z", "number": "3", "summary": "Source connected.| CVE status created. (valid)" }, { "date": "2026-07-09T11:09:22.944431Z", "number": "4", "summary": "Source connected.| CVE status created. (valid)| Products connected (6).| References created (26)." }, { "date": "2026-07-09T11:09:27.925739Z", "number": "5", "summary": "NCSC Score updated." }, { "date": "2026-07-09T22:26:36.092794Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)." }, { "date": "2026-07-09T22:26:39.022133Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-07-09T23:17:06.198634Z", "number": "8", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (4).| References created (1).| CWES updated (1)." }, { "date": "2026-07-09T23:17:08.227776Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-07-10T14:56:30.491123Z", "number": "10", "summary": "Unknown change." }, { "date": "2026-07-10T16:40:45.541447Z", "number": "11", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-07-10T16:40:48.068600Z", "number": "12", "summary": "NCSC Score updated." }, { "date": "2026-07-13T05:27:20.341226Z", "number": "13", "summary": "Source connected.| CVE status created. (valid)" }, { "date": "2026-07-13T05:27:28.419394Z", "number": "14", "summary": "NCSC Score updated." }, { "date": "2026-07-13T21:25:33.199451Z", "number": "15", "summary": "Products connected (40).| Product Identifiers created (40)." }, { "date": "2026-07-13T21:25:35.943175Z", "number": "16", "summary": "NCSC Score updated." }, { "date": "2026-08-14T15:22:55.487729Z", "number": "17", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-08-14T15:23:29.427715Z", "number": "18", "summary": "NCSC Score updated." }, { "date": "2026-09-02T10:27:11.120688Z", "number": "19", "summary": "EPSS updated." }, { "date": "2026-09-03T00:29:33.854253Z", "number": "20", "summary": "NCSC Score updated." }, { "date": "2026-09-03T14:16:50.935066Z", "number": "21", "summary": "EPSS updated." }, { "date": "2026-09-03T18:41:16.712644Z", "number": "22", "summary": "EPSS updated." }, { "date": "2026-09-04T15:25:30.194646Z", "number": "23", "summary": "EPSS updated." }, { "date": "2026-09-05T04:51:22.927102Z", "number": "24", "summary": "NCSC Score updated." }, { "date": "2026-09-05T15:24:49.416497Z", "number": "25", "summary": "EPSS updated." }, { "date": "2026-09-06T15:25:20.175304Z", "number": "26", "summary": "EPSS updated." }, { "date": "2026-09-07T15:25:47.680217Z", "number": "27", "summary": "EPSS updated." }, { "date": "2026-09-08T04:37:41.349687Z", "number": "28", "summary": "NCSC Score updated." }, { "date": "2026-09-09T07:19:16.641992Z", "number": "29", "summary": "EPSS updated." }, { "date": "2026-09-09T15:29:31.299044Z", "number": "30", "summary": "EPSS updated." }, { "date": "2026-09-10T08:00:28.277616Z", "number": "31", "summary": "NCSC Score updated." }, { "date": "2026-09-29T15:42:13.080439Z", "number": "32", "summary": "EPSS created.| Unknown change." }, { "date": "2026-09-29T15:42:17.887436Z", "number": "33", "summary": "NCSC Score updated." } ], "status": "interim", "version": "33" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/evolved", "product": { "name": "vers:unknown/evolved", "product_id": "CSAFPID-1253029", "product_identification_helper": { "cpe": "cpe:/o:juniper:junos:evolved" } } } ], "category": "product_name", "name": "JUNOS" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-2669434", "product_identification_helper": { "cpe": "cpe:/h:juniper:ex:-" } } } ], "category": "product_name", "name": "Juniper EX Series" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1341541", "product_identification_helper": { "cpe": "cpe:/o:juniper:junos:-" } } } ], "category": "product_name", "name": "Juniper JUNOS" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-2669431", "product_identification_helper": { "cpe": "cpe:/h:juniper:mx:-" } } } ], "category": "product_name", "name": "Juniper MX Series" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-6016081", "product_identification_helper": { "cpe": "cpe:/h:juniper:qfx:-" } } } ], "category": "product_name", "name": "Juniper QFX Series" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-2162264", "product_identification_helper": { "cpe": "cpe:/h:juniper:srx_service_gateways:-" } } } ], "category": "product_name", "name": "Juniper SRX Series" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/23.2r2-s7", "product": { "name": "vers:unknown/23.2r2-s7", "product_id": "CSAFPID-8576198" } }, { "category": "product_version_range", "name": "vers:unknown/23.4r2-s8", "product": { "name": "vers:unknown/23.4r2-s8", "product_id": "CSAFPID-8576199" } }, { "category": "product_version_range", "name": "vers:unknown/24.2r2-s4", "product": { "name": "vers:unknown/24.2r2-s4", "product_id": "CSAFPID-8576200" } }, { "category": "product_version_range", "name": "vers:unknown/24.4r2-s4", "product": { "name": "vers:unknown/24.4r2-s4", "product_id": "CSAFPID-8576201" } }, { "category": "product_version_range", "name": "vers:unknown/<23.2r2-s7|<23.4r2-s8|<24.2r2-s4|<24.4r2-s4", "product": { "name": "vers:unknown/<23.2r2-s7|<23.4r2-s8|<24.2r2-s4|<24.4r2-s4", "product_id": "CSAFPID-8576197" } } ], "category": "product_name", "name": "Junos OS" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/23.2", "product": { "name": "vers:unknown/23.2", "product_id": "CSAFPID-2177324", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.2:-:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.2-r1", "product": { "name": "vers:unknown/23.2-r1", "product_id": "CSAFPID-5383906", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.2:r1:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.2-r1-s1", "product": { "name": "vers:unknown/23.2-r1-s1", "product_id": "CSAFPID-5383907", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.2:r1-s1:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.2-r1-s2", "product": { "name": "vers:unknown/23.2-r1-s2", "product_id": "CSAFPID-5383908", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.2:r1-s2:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.2-r2", "product": { "name": "vers:unknown/23.2-r2", "product_id": "CSAFPID-5412627", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.2:r2:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.2-r2-s1", "product": { "name": "vers:unknown/23.2-r2-s1", "product_id": "CSAFPID-5460955", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.2:r2-s1:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.2-r2-s2", "product": { "name": "vers:unknown/23.2-r2-s2", "product_id": "CSAFPID-5460956", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.2:r2-s2:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.2-r2-s3", "product": { "name": "vers:unknown/23.2-r2-s3", "product_id": "CSAFPID-5460986", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.2:r2-s3:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.2-r2-s4", "product": { "name": "vers:unknown/23.2-r2-s4", "product_id": "CSAFPID-5461460", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.2:r2-s4:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.2-r2-s5", "product": { "name": "vers:unknown/23.2-r2-s5", "product_id": "CSAFPID-6058431", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.2:r2-s5:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.2-r2-s6", "product": { "name": "vers:unknown/23.2-r2-s6", "product_id": "CSAFPID-6063659", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.2:r2-s6:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.4", "product": { "name": "vers:unknown/23.4", "product_id": "CSAFPID-2505280", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.4:-:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.4-r1", "product": { "name": "vers:unknown/23.4-r1", "product_id": "CSAFPID-5383909", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.4:r1:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.4-r1-s1", "product": { "name": "vers:unknown/23.4-r1-s1", "product_id": "CSAFPID-5412628", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.4:r1-s1:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.4-r1-s2", "product": { "name": "vers:unknown/23.4-r1-s2", "product_id": "CSAFPID-5460957", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.4:r1-s2:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.4-r2", "product": { "name": "vers:unknown/23.4-r2", "product_id": "CSAFPID-5457143", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.4:r2:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.4-r2-s1", "product": { "name": "vers:unknown/23.4-r2-s1", "product_id": "CSAFPID-5460958", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.4:r2-s1:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.4-r2-s2", "product": { "name": "vers:unknown/23.4-r2-s2", "product_id": "CSAFPID-5460959", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.4:r2-s2:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.4-r2-s3", "product": { "name": "vers:unknown/23.4-r2-s3", "product_id": "CSAFPID-5460964", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.4:r2-s3:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.4-r2-s4", "product": { "name": "vers:unknown/23.4-r2-s4", "product_id": "CSAFPID-5461275", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.4:r2-s4:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.4-r2-s5", "product": { "name": "vers:unknown/23.4-r2-s5", "product_id": "CSAFPID-5461528", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.4:r2-s5:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.4-r2-s6", "product": { "name": "vers:unknown/23.4-r2-s6", "product_id": "CSAFPID-6058536", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.4:r2-s6:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/23.4-r2-s7", "product": { "name": "vers:unknown/23.4-r2-s7", "product_id": "CSAFPID-8775442", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:23.4:r2-s7:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/24.2", "product": { "name": "vers:unknown/24.2", "product_id": "CSAFPID-2535286", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:24.2:-:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/24.2-r1", "product": { "name": "vers:unknown/24.2-r1", "product_id": "CSAFPID-5460960", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:24.2:r1:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/24.2-r1-s1", "product": { "name": "vers:unknown/24.2-r1-s1", "product_id": "CSAFPID-5460961", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:24.2:r1-s1:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/24.2-r1-s2", "product": { "name": "vers:unknown/24.2-r1-s2", "product_id": "CSAFPID-5460987", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:24.2:r1-s2:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/24.2-r2", "product": { "name": "vers:unknown/24.2-r2", "product_id": "CSAFPID-5460962", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:24.2:r2:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/24.2-r2-s1", "product": { "name": "vers:unknown/24.2-r2-s1", "product_id": "CSAFPID-5461525", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:24.2:r2-s1:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/24.2-r2-s2", "product": { "name": "vers:unknown/24.2-r2-s2", "product_id": "CSAFPID-5461536", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:24.2:r2-s2:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/24.2-r2-s3", "product": { "name": "vers:unknown/24.2-r2-s3", "product_id": "CSAFPID-6058437", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:24.2:r2-s3:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/24.4", "product": { "name": "vers:unknown/24.4", "product_id": "CSAFPID-5443921", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:24.4:-:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/24.4-r1", "product": { "name": "vers:unknown/24.4-r1", "product_id": "CSAFPID-5460988", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:24.4:r1:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/24.4-r1-s2", "product": { "name": "vers:unknown/24.4-r1-s2", "product_id": "CSAFPID-5461368", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:24.4:r1-s2:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/24.4-r1-s3", "product": { "name": "vers:unknown/24.4-r1-s3", "product_id": "CSAFPID-5461459", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:24.4:r1-s3:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/24.4-r2", "product": { "name": "vers:unknown/24.4-r2", "product_id": "CSAFPID-5460989", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:24.4:r2:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/24.4-r2-s1", "product": { "name": "vers:unknown/24.4-r2-s1", "product_id": "CSAFPID-5461546", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:24.4:r2-s1:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/24.4-r2-s2", "product": { "name": "vers:unknown/24.4-r2-s2", "product_id": "CSAFPID-6062480", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:24.4:r2-s2:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/24.4-r2-s3", "product": { "name": "vers:unknown/24.4-r2-s3", "product_id": "CSAFPID-8775444", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:24.4:r2-s3:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/<23.2", "product": { "name": "vers:unknown/<23.2", "product_id": "CSAFPID-6063658", "product_identification_helper": { "cpe": "cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "junos" } ], "category": "vendor", "name": "Juniper" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/23.4|<23.4r2-s8", "product": { "name": "vers:unknown/23.4|<23.4r2-s8", "product_id": "CSAFPID-8596763" } }, { "category": "product_version_range", "name": "vers:unknown/24.2|<24.2r2-s4", "product": { "name": "vers:unknown/24.2|<24.2r2-s4", "product_id": "CSAFPID-8596764" } }, { "category": "product_version_range", "name": "vers:unknown/24.4|<24.4r2-s4", "product": { "name": "vers:unknown/24.4|<24.4r2-s4", "product_id": "CSAFPID-8596800" } }, { "category": "product_version_range", "name": "vers:unknown/<23.2r2-s7", "product": { "name": "vers:unknown/<23.2r2-s7", "product_id": "CSAFPID-8596762" } } ], "category": "product_name", "name": "Junos OS" } ], "category": "vendor", "name": "Juniper Networks" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-57020", "cwe": { "id": "CWE-754", "name": "Improper Check for Unusual or Exceptional Conditions" }, "notes": [ { "category": "description", "text": "An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on QFX10000 Series allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS). On all QFX10000 platforms in an EVPN-VxLAN scenario, if an attacker sends IPv6 multicast traffic and these packets reach the non-IRB interface of a spine switch, it floods the packet to other spines and all Ethernet Segment Identifier (ESI) leaf switches. This flooding causes the packet to be forwarded in a endless loop, which can lead to saturation of the involved links and in turn impact to legitimate traffic.", "title": "juniper - https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-QFX10000-Series-IPv6-multicast-traffic-received-on-non-IRB-interfaces-causes-a-multicast-flood-CVE-2026-57020" }, { "category": "description", "text": "An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on QFX10000 Series allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).\n\nOn all QFX10000 platforms in an EVPN-VxLAN scenario, if an attacker sends IPv6 multicast traffic and these packets reach the non-IRB interface of a spine switch it floods the packet to other spines and all Ethernet Segment Identifier (ESI) leaf switches. This flooding causes the packet to be forwarded in a endless loop, which can lead to saturation of the involved links and in turn impact to legitimate traffic.\n\n\n\nThis issue affects Junos OS on QFX10000 Series:\n\n\n * all versions before 23.2R2-S7,\n * 23.4 versions before 23.4R2-S8,\n * 24.2 versions before 24.2R2-S4,\n * 24.4 versions before 24.4R2-S4.\n\n\n\nThis issue does not affect Junos version after 24.4 as the QFX10000 Series devices are not supported on newer versions anymore.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-57020" }, { "category": "description", "text": "An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on QFX10000 Series allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).\n\nOn all QFX10000 platforms in an EVPN-VxLAN scenario, if an attacker sends IPv6 multicast traffic and these packets reach the non-IRB interface of a spine switch it floods the packet to other spines and all Ethernet Segment Identifier (ESI) leaf switches. This flooding causes the packet to be forwarded in a endless loop, which can lead to saturation of the involved links and in turn impact to legitimate traffic.\n\n\n\nThis issue affects Junos OS on QFX10000 Series:\n\n\n * all versions before 23.2R2-S7,\n * 23.4 versions before 23.4R2-S8,\n * 24.2 versions before 24.2R2-S4,\n * 24.4 versions before 24.4R2-S4.\n\n\n\nThis issue does not affect Junos version after 24.4 as the QFX10000 Series devices are not supported on newer versions anymore.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-57020" }, { "category": "other", "text": "0.00269", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:U/RE:M", "title": "CVSSV4" }, { "category": "other", "text": "7.1", "title": "CVSSV4 base score" }, { "category": "other", "text": "6.1", "title": "NCSC Score" }, { "category": "other", "text": "VENDOR FIX as product remediation category, Is related to a product by vendor Juniper, Is related to an uncommon product source", "title": "NCSC Score top increasing factors" }, { "category": "details", "text": "Severity: 2\n", "title": "Vendor assessment" } ], "product_status": { "fixed": [ "CSAFPID-8576198", "CSAFPID-8576199", "CSAFPID-8576200", "CSAFPID-8576201" ], "known_affected": [ "CSAFPID-8576197", "CSAFPID-1253029", "CSAFPID-1341541", "CSAFPID-2162264", "CSAFPID-2669431", "CSAFPID-2669434", "CSAFPID-6016081", "CSAFPID-2177324", "CSAFPID-2505280", "CSAFPID-2535286", "CSAFPID-5383906", "CSAFPID-5383907", "CSAFPID-5383908", "CSAFPID-5383909", "CSAFPID-5412627", "CSAFPID-5412628", "CSAFPID-5443921", "CSAFPID-5457143", "CSAFPID-5460955", "CSAFPID-5460956", "CSAFPID-5460957", "CSAFPID-5460958", "CSAFPID-5460959", "CSAFPID-5460960", "CSAFPID-5460961", "CSAFPID-5460962", "CSAFPID-5460964", "CSAFPID-5460986", "CSAFPID-5460987", "CSAFPID-5460988", "CSAFPID-5460989", "CSAFPID-5461275", "CSAFPID-5461368", "CSAFPID-5461459", "CSAFPID-5461460", "CSAFPID-5461525", "CSAFPID-5461528", "CSAFPID-5461536", "CSAFPID-5461546", "CSAFPID-6058431", "CSAFPID-6058437", "CSAFPID-6058536", "CSAFPID-6062480", "CSAFPID-6063658", "CSAFPID-6063659", "CSAFPID-8775442", "CSAFPID-8775444", "CSAFPID-8596763", "CSAFPID-8596764", "CSAFPID-8596800", "CSAFPID-8596762" ] }, "references": [ { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss" }, { "category": "external", "summary": "Source - hkcert", "url": "https://www.hkcert.org/security-bulletin/juniper-junos-os-multiple-vulnerabilities_20260709" }, { "category": "external", "summary": "Source - juniper", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-QFX10000-Series-IPv6-multicast-traffic-received-on-non-IRB-interfaces-causes-a-multicast-flood-CVE-2026-57020" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2257.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-57020" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://advisories.ncsc.nl/advisory?id=NCSC-2026-0224" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://vulnerabilities.ncsc.nl/manual/CVE-2026-57020" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-57020" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-EX-Series-Subscribing-to-an-unsupported-telemetry-sensor-path-causes-fxpc-process-crash-CVE-2026-57032" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-EX-Series-Unauthorized-users-can-execute-service-impacting-CLI-command-CVE-2026-33802" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-EX4100-Series-EX4400-With-sFlow-configured-in-a-VC-scenario-multicast-traffic-leads-to-an-FPC-crash-CVE-2026-57027" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-Evolved-A-port-which-has-been-inadvertently-exposed-can-be-reached-by-an-attacker-CVE-2026-33803" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-Evolved-A-port-which-has-been-inadvertently-exposed-can-be-reached-by-an-attacker-CVE-2026-57028" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-Evolved-PTX-Series-Receipt-of-repeated-ECMP-routing-updates-results-in-PFE-crash-CVE-2026-33794" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-Evolved-QFX-Series-When-sFlow-collector-reachability-changes-evo-pfemand-process-can-crash-CVE-2026-57029" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-Evolved-URL-handling-vulnerability-in-libfetch-results-in-heap-buffer-overflow-CVE-2020-7450" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-MX-Series-For-subscribers-configured-on-static-interfaces-input-filters-are-not-in-effect-CVE-2026-57031" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-MX-Series-In-a-VC-scenario-a-high-rate-of-micro-BFD-session-flaps-will-cause-an-FPC-crash-CVE-2026-33800" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-MX-Series-Specific-traffic-causes-an-FPC-to-reset-CVE-2026-57019" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-MX-Series-Web-filtering-doesn-t-block-specifically-formatted-URLs-CVE-2026-57054" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-MX-Series-with-SPC3-SRX-Series-A-specifically-malformed-TCP-packet-causes-a-flowd-crash-CVE-2026-57023" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-MX-Series-with-SPC3-SRX-Series-Processing-of-a-specifically-malformed-SIP-invite-causes-a-flowd-crash-CVE-2026-57026" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-MX-Series-with-SPC3-SRX-Series-Specific-packet-in-response-to-a-TCP-connection-establishment-by-the-affected-device-can-crash-the-PFE-CVE-2026-57022" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-MX-with-SPC3-SRX-Series-Repeated-VPN-negotiation-failures-will-eventually-cause-iked-to-crash-continuously-CVE-2026-57024" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-QFX10000-Series-IPv6-multicast-traffic-received-on-non-IRB-interfaces-causes-a-multicast-flood-CVE-2026-57020" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-SRX-Series-Flow-sessions-are-not-getting-cleared-leading-to-a-DoS-CVE-2026-57030" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-SRX-Series-If-VPN-compliance-check-is-configured-an-attacker-can-cause-http-gk-process-crash-CVE-2026-57021" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-Configuration-of-a-specific-SSH-option-results-in-mgd-crash-CVE-2026-21901" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-EX-Series-QFX-Series-MX-Series-A-specific-show-l2-learning-command-causes-l2ald-crash-CVE-2026-57025" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-Receipt-of-a-specific-SNMPv3-request-results-in-memory-leak-and-eventual-snmpd-crash-CVE-2026-33799" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-When-a-specifically-malformed-BGP-route-update-is-received-RPD-crashes-CVE-2026-33801" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/global-search/%40uri#q=Junos%20OS&sortCriteria=date%20descending&f-sf_articletype=Security%20Advisories&numberOfResults=50" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2257.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2257" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://supportportal.juniper.net/JSA110080" } ], "remediations": [ { "category": "vendor_fix", "details": "Update to Junos OS versions 23.2R2-S7, 23.4R2-S8, 24.2R2-S4, or 24.4R2-S4.", "product_ids": [ "CSAFPID-8576197" ] } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.5, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-1253029", "CSAFPID-1341541", "CSAFPID-2162264", "CSAFPID-2177324", "CSAFPID-2505280", "CSAFPID-2535286", "CSAFPID-2669431", "CSAFPID-2669434", "CSAFPID-5383906", "CSAFPID-5383907", "CSAFPID-5383908", "CSAFPID-5383909", "CSAFPID-5412627", "CSAFPID-5412628", "CSAFPID-5443921", "CSAFPID-5457143", "CSAFPID-5460955", "CSAFPID-5460956", "CSAFPID-5460957", "CSAFPID-5460958", "CSAFPID-5460959", "CSAFPID-5460960", "CSAFPID-5460961", "CSAFPID-5460962", "CSAFPID-5460964", "CSAFPID-5460986", "CSAFPID-5460987", "CSAFPID-5460988", "CSAFPID-5460989", "CSAFPID-5461275", "CSAFPID-5461368", "CSAFPID-5461459", "CSAFPID-5461460", "CSAFPID-5461525", "CSAFPID-5461528", "CSAFPID-5461536", "CSAFPID-5461546", "CSAFPID-6016081", "CSAFPID-6058431", "CSAFPID-6058437", "CSAFPID-6058536", "CSAFPID-6062480", "CSAFPID-6063658", "CSAFPID-6063659", "CSAFPID-8576197", "CSAFPID-8596762", "CSAFPID-8596763", "CSAFPID-8596764", "CSAFPID-8596800", "CSAFPID-8775442", "CSAFPID-8775444" ] } ], "title": "CVE-2026-57020" } ] }