{ "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-2026-33803", "tracking": { "current_release_date": "2026-07-13T05:27:35.984976Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-33803", "initial_release_date": "2026-07-08T18:41:47.353957Z", "revision_history": [ { "date": "2026-07-08T18:41:47.353957Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (2).| Product Remediations created (1).| Vendor_assessment created." }, { "date": "2026-07-08T18:41:52.269387Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-07-09T03:41:55.415058Z", "number": "3", "summary": "Source connected.| CVE status created. (valid)" }, { "date": "2026-07-09T11:09:21.438049Z", "number": "4", "summary": "Source connected.| CVE status created. (valid)| Products connected (6).| References created (26)." }, { "date": "2026-07-09T11:09:25.210218Z", "number": "5", "summary": "NCSC Score updated." }, { "date": "2026-07-09T22:25:39.986637Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)." }, { "date": "2026-07-09T22:25:48.879083Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-07-09T23:16:54.839956Z", "number": "8", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (4).| Products connected (2).| References created (1).| CWES updated (1)." }, { "date": "2026-07-09T23:17:04.486309Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-07-10T14:40:49.340795Z", "number": "10", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-07-10T14:40:52.360705Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-07-10T14:56:32.259301Z", "number": "12", "summary": "Unknown change." }, { "date": "2026-07-13T05:27:19.866133Z", "number": "13", "summary": "Source connected.| CVE status created. (valid)" } ], "status": "interim", "version": "13" } }, "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" } ], "category": "vendor", "name": "Juniper" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/23.2r2-s7-evo|23.4r2-s8-evo|24.2r2-s5-evo|24.4r2-s4-evo|25.2r2-s1-evo|25.4r1-s2-evo|25.4r2-evo|26.2r1-evo", "product": { "name": "vers:unknown/23.2r2-s7-evo|23.4r2-s8-evo|24.2r2-s5-evo|24.4r2-s4-evo|25.2r2-s1-evo|25.4r1-s2-evo|25.4r2-evo|26.2r1-evo", "product_id": "CSAFPID-8576210" } }, { "category": "product_version_range", "name": "vers:unknown/23.4|<23.4r2-s8-evo", "product": { "name": "vers:unknown/23.4|<23.4r2-s8-evo", "product_id": "CSAFPID-8596790" } }, { "category": "product_version_range", "name": "vers:unknown/24.2|<24.2r2-s5-evo", "product": { "name": "vers:unknown/24.2|<24.2r2-s5-evo", "product_id": "CSAFPID-8596814" } }, { "category": "product_version_range", "name": "vers:unknown/24.4|<24.4r2-s4-evo", "product": { "name": "vers:unknown/24.4|<24.4r2-s4-evo", "product_id": "CSAFPID-8596817" } }, { "category": "product_version_range", "name": "vers:unknown/25.2|<25.2r2-s1-evo", "product": { "name": "vers:unknown/25.2|<25.2r2-s1-evo", "product_id": "CSAFPID-8596818" } }, { "category": "product_version_range", "name": "vers:unknown/25.4|<25.4r1-s2-evo", "product": { "name": "vers:unknown/25.4|<25.4r1-s2-evo", "product_id": "CSAFPID-8596819" } }, { "category": "product_version_range", "name": "vers:unknown/<23.2r2-s7-evo", "product": { "name": "vers:unknown/<23.2r2-s7-evo", "product_id": "CSAFPID-8596816" } }, { "category": "product_version_range", "name": "vers:unknown/<23.2r2-s7-evo|<23.4r2-s8-evo|<24.2r2-s5-evo|<24.4r2-s4-evo|<25.2r2-s1-evo|<25.4r1-s2-evo", "product": { "name": "vers:unknown/<23.2r2-s7-evo|<23.4r2-s8-evo|<24.2r2-s5-evo|<24.4r2-s4-evo|<25.2r2-s1-evo|<25.4r1-s2-evo", "product_id": "CSAFPID-8576209" } } ], "category": "product_name", "name": "Junos OS Evolved" } ], "category": "vendor", "name": "Juniper Networks" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-33803", "cwe": { "id": "CWE-923", "name": "Improper Restriction of Communication Channel to Intended Endpoints" }, "notes": [ { "category": "description", "text": "An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a limited information disclosure and availability impact to the device. Due to a wrong initialization, a process which should only be able to communicate internally within the device can be reached over the network via an open port. This leads to a device being inadvertently exposed and increased CPU cycles spent processing ingress packets.", "title": "juniper - 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": "description", "text": "An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a limited information disclosure and availability impact to the device.\n\n\nDue to a wrong initialization, a process which should only be able to communicate internally within the device can be reached over the network via an open port. This leads to a device being inadvertently exposed and increased CPU cycles spent processing ingress packets.\n\nThis issue affects Junos OS Evolved:\n\n\n * all versions before 23.2R2-S7-EVO,\n * 23.4 versions before 23.4R2-S8-EVO,\n * 24.2 versions before 24.2R2-S5-EVO,\n * 24.4 versions before 24.4R2-S4-EVO,\n * 25.2 versions before 25.2R2-S1-EVO,\n * 25.4 versions before 25.4R1-S2-EVO.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33803" }, { "category": "description", "text": "An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a limited information disclosure and availability impact to the device.\n\n\nDue to a wrong initialization, a process which should only be able to communicate internally within the device can be reached over the network via an open port. This leads to a device being inadvertently exposed and increased CPU cycles spent processing ingress packets.\n\nThis issue affects Junos OS Evolved:\n\n\n * all versions before 23.2R2-S7-EVO,\n * 23.4 versions before 23.4R2-S8-EVO,\n * 24.2 versions before 24.2R2-S5-EVO,\n * 24.4 versions before 24.4R2-S4-EVO,\n * 25.2 versions before 25.2R2-S1-EVO,\n * 25.4 versions before 25.4R1-S2-EVO.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33803.json" }, { "category": "other", "text": "0.00354", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/AU:Y/R:U/RE:M", "title": "CVSSV4" }, { "category": "other", "text": "6.9", "title": "CVSSV4 base score" }, { "category": "other", "text": "5.8", "title": "NCSC Score" }, { "category": "other", "text": "Is related to a product by vendor Juniper, There is product data available from source Certbundde, Is related to an uncommon product source", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "The CVSS vector string contains AV:N (Attack Vector: Network)", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 2\n", "title": "Vendor assessment" } ], "product_status": { "fixed": [ "CSAFPID-8576210" ], "known_affected": [ "CSAFPID-8576209", "CSAFPID-1253029", "CSAFPID-1341541", "CSAFPID-2162264", "CSAFPID-2669431", "CSAFPID-2669434", "CSAFPID-6016081", "CSAFPID-8596790", "CSAFPID-8596814", "CSAFPID-8596816", "CSAFPID-8596817", "CSAFPID-8596818", "CSAFPID-8596819" ] }, "references": [ { "category": "external", "summary": "Source - juniper", "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": "Source - hkcert", "url": "https://www.hkcert.org/security-bulletin/juniper-junos-os-multiple-vulnerabilities_20260709" }, { "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-2026-33803" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33803.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=10000" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://advisories.ncsc.nl/advisory?id=NCSC-2026-0224" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2257" }, { "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://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://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/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-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-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-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 - cveprojectv5; nvd", "url": "https://supportportal.juniper.net/JSA110078" } ], "remediations": [ { "category": "workaround", "details": "Please ensure that your control plane protection only explicitly permits access to ports intended to be reachable and only from authorized endpoints. All other traffic destined to the control plane should be disallowed.", "product_ids": [ "CSAFPID-8576209" ] } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L", "baseScore": 6.5, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-1253029", "CSAFPID-1341541", "CSAFPID-2162264", "CSAFPID-2669431", "CSAFPID-2669434", "CSAFPID-6016081", "CSAFPID-8576209", "CSAFPID-8596790", "CSAFPID-8596814", "CSAFPID-8596816", "CSAFPID-8596817", "CSAFPID-8596818", "CSAFPID-8596819" ] } ], "title": "CVE-2026-33803" } ] }