{ "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-2026-42781", "tracking": { "current_release_date": "2026-05-15T12:13:39.402337Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-42781", "initial_release_date": "2026-05-13T15:47:16.446393Z", "revision_history": [ { "date": "2026-05-13T15:47:16.446393Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (5).| References created (1).| CWES updated (1)." }, { "date": "2026-05-13T15:47:27.486371Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-05-13T17:09:08.118814Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)." }, { "date": "2026-05-13T17:09:11.337867Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-05-13T17:58:28.569799Z", "number": "5", "summary": "Unknown change." }, { "date": "2026-05-13T18:45:47.939841Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (7).| Product Threats created (5).| Product Remediations created (5).| Products connected (2).| CWES updated (1)." }, { "date": "2026-05-13T18:45:52.256083Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-05-14T15:07:13.555346Z", "number": "8", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-05-14T15:07:16.032842Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-05-15T10:12:15.023368Z", "number": "10", "summary": "Source connected.| CVE status created. (valid)| Products connected (10).| References created (60)." }, { "date": "2026-05-15T10:12:25.654440Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-05-15T12:13:38.483111Z", "number": "12", "summary": "Source connected.| CVE status created. (valid)" } ], "status": "interim", "version": "12" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/16.1.0|<*", "product": { "name": "vers:unknown/16.1.0|<*", "product_id": "CSAFPID-1968133" } }, { "category": "product_version_range", "name": "vers:unknown/17.1.0|<17.1.3.1", "product": { "name": "vers:unknown/17.1.0|<17.1.3.1", "product_id": "CSAFPID-5525263" } }, { "category": "product_version_range", "name": "vers:unknown/17.5.0|<17.5.1.4", "product": { "name": "vers:unknown/17.5.0|<17.5.1.4", "product_id": "CSAFPID-5525262" } }, { "category": "product_version_range", "name": "vers:unknown/21.0.0|<21.0.0.1", "product": { "name": "vers:unknown/21.0.0|<21.0.0.1", "product_id": "CSAFPID-7046638" } }, { "category": "product_version_range", "name": "vers:unknown/21.1.0|<*", "product": { "name": "vers:unknown/21.1.0|<*", "product_id": "CSAFPID-7046550" } }, { "category": "product_version_range", "name": "vers:unknown/advanced wafasm", "product": { "name": "vers:unknown/advanced wafasm", "product_id": "CSAFPID-7067500", "product_identification_helper": { "cpe": "cpe:/a:f5:big-ip:advanced_wafasm" } } }, { "category": "product_version_range", "name": "vers:unknown/apm", "product": { "name": "vers:unknown/apm", "product_id": "CSAFPID-7067497", "product_identification_helper": { "cpe": "cpe:/a:f5:big-ip:apm" } } }, { "category": "product_version_range", "name": "vers:unknown/ddos hybrid defender", "product": { "name": "vers:unknown/ddos hybrid defender", "product_id": "CSAFPID-7067499", "product_identification_helper": { "cpe": "cpe:/a:f5:big-ip:ddos_hybrid_defender" } } }, { "category": "product_version_range", "name": "vers:unknown/dns", "product": { "name": "vers:unknown/dns", "product_id": "CSAFPID-7067496", "product_identification_helper": { "cpe": "cpe:/a:f5:big-ip:dns" } } }, { "category": "product_version_range", "name": "vers:unknown/next cnf", "product": { "name": "vers:unknown/next cnf", "product_id": "CSAFPID-7067503", "product_identification_helper": { "cpe": "cpe:/a:f5:big-ip:next_cnf" } } }, { "category": "product_version_range", "name": "vers:unknown/next for kubernetes", "product": { "name": "vers:unknown/next for kubernetes", "product_id": "CSAFPID-7067502", "product_identification_helper": { "cpe": "cpe:/a:f5:big-ip:next_for_kubernetes" } } }, { "category": "product_version_range", "name": "vers:unknown/next spk", "product": { "name": "vers:unknown/next spk", "product_id": "CSAFPID-7067501", "product_identification_helper": { "cpe": "cpe:/a:f5:big-ip:next_spk" } } }, { "category": "product_version_range", "name": "vers:unknown/pem", "product": { "name": "vers:unknown/pem", "product_id": "CSAFPID-7067498", "product_identification_helper": { "cpe": "cpe:/a:f5:big-ip:pem" } } }, { "category": "product_version_range", "name": "vers:unknown/ssl orchestrator", "product": { "name": "vers:unknown/ssl orchestrator", "product_id": "CSAFPID-7067495", "product_identification_helper": { "cpe": "cpe:/a:f5:big-ip:ssl_orchestrator" } } } ], "category": "product_name", "name": "BIG-IP" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/>=17.1.3.1", "product": { "name": "vers:unknown/>=17.1.3.1", "product_id": "CSAFPID-7047052" } }, { "category": "product_version_range", "name": "vers:unknown/>=17.5.1.4", "product": { "name": "vers:unknown/>=17.5.1.4", "product_id": "CSAFPID-7047053" } }, { "category": "product_version_range", "name": "vers:unknown/>=21.0.0.1", "product": { "name": "vers:unknown/>=21.0.0.1", "product_id": "CSAFPID-7047242" } } ], "category": "product_name", "name": "BIG-IP (all modules)" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/*", "product": { "name": "vers:unknown/*", "product_id": "CSAFPID-7047239" } } ], "category": "product_name", "name": "BIG-IP tenants on BX110 blades on VELOS" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/*", "product": { "name": "vers:unknown/*", "product_id": "CSAFPID-7047240" } } ], "category": "product_name", "name": "BIG-IP tenants on BX520 blades on VELOS" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/*", "product": { "name": "vers:unknown/*", "product_id": "CSAFPID-7047241" } } ], "category": "product_name", "name": "BIG-IP tenants on all other rSeries systems" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/*", "product": { "name": "vers:unknown/*", "product_id": "CSAFPID-7047237" } } ], "category": "product_name", "name": "BIG-IP tenants on r10000 rSeries" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/*", "product": { "name": "vers:unknown/*", "product_id": "CSAFPID-7047238" } } ], "category": "product_name", "name": "BIG-IP tenants on r12000 rSeries" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/*", "product": { "name": "vers:unknown/*", "product_id": "CSAFPID-7047236" } } ], "category": "product_name", "name": "BIG-IP tenants on r5000 rSeries" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1330602", "product_identification_helper": { "cpe": "cpe:/a:f5:big-ip:-" } } } ], "category": "product_name", "name": "F5 BIG-IP" } ], "category": "vendor", "name": "F5" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-42781", "cwe": { "id": "CWE-835", "name": "Loop with Unreachable Exit Condition ('Infinite Loop')" }, "notes": [ { "category": "description", "text": "When embedded Packet Velocity Acceleration (ePVA) acceleration is configured, undisclosed local ethernet traffic can cause an increase in ePVA and Traffic Management Microkernel (TMM) resource utilization.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/42xxx/CVE-2026-42781.json" }, { "category": "description", "text": "When embedded Packet Velocity Acceleration (ePVA) acceleration is configured, undisclosed local ethernet traffic can cause an increase in ePVA and Traffic Management Microkernel (TMM) resource utilization.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-42781" }, { "category": "description", "text": "When embedded Packet Velocity Acceleration (ePVA) acceleration is configured, undisclosed local ethernet traffic can cause an increase in ePVA and Traffic Management Microkernel (TMM) resource utilization.", "title": "f5 - https://my.f5.com/manage/s/article/K000160862" }, { "category": "other", "text": "0.00022", "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:N", "title": "CVSSV4" }, { "category": "other", "text": "7.1", "title": "CVSSV4 base score" }, { "category": "other", "text": "4.5", "title": "NCSC Score" }, { "category": "other", "text": "There is product data available from source Certbundde", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "The value of the most recent EPSS score, Is related to (a version of) an uncommon product, There is cwe data available from source Nvd", "title": "NCSC Score top decreasing factors" } ], "product_status": { "fixed": [ "CSAFPID-7047052", "CSAFPID-7047053", "CSAFPID-7047242" ], "known_affected": [ "CSAFPID-5525262", "CSAFPID-5525263", "CSAFPID-7046638", "CSAFPID-7047236", "CSAFPID-7047237", "CSAFPID-7047238", "CSAFPID-7047239", "CSAFPID-7047240", "CSAFPID-1330602", "CSAFPID-7067495", "CSAFPID-7067496", "CSAFPID-7067497", "CSAFPID-7067498", "CSAFPID-7067499", "CSAFPID-7067500", "CSAFPID-7067501", "CSAFPID-7067502", "CSAFPID-7067503" ], "known_not_affected": [ "CSAFPID-1968133", "CSAFPID-7046550", "CSAFPID-7047241" ] }, "references": [ { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/42xxx/CVE-2026-42781.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-42781" }, { "category": "external", "summary": "Source - f5", "url": "https://my.f5.com/manage/s/article/K000160862" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1532.json" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://advisories.ncsc.nl/advisory?id=NCSC-2026-0162" }, { "category": "external", "summary": "Reference - certbundde; cveprojectv5; nvd", "url": "https://my.f5.com/manage/s/article/K000160862" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1532.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1532" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000149743" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000156734" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000157895" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000158038" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160863" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160874" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160876" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160903" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160911" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160916" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160945" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160971" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160972" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000161018" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160981" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160979" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160973" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000161040" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000161022" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000161107" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K32950402" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160975" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160857" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000158978" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000158070" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000156761" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000158082" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000156581" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000156604" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160926" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160901" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000158971" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000159034" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000157981" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000158979" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160875" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K35544022" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000161023" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000161056" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160788" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://my.f5.com/manage/s/article/K000160727" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-29965" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-29969" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-29971" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-29972" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-29982" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-29984" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-29987" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-29998" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-29999" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-30003" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-30004" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-30005" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-29973" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-29975" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-29976" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-29991" } ], "remediations": [ { "category": "mitigation", "details": "You can mitigate this issue by disabling ePVA acceleration on affected virtual servers; for example, avoid using the fastL4 profile. Alternatively, you can enforce ARP security on the connected network; for example, deploying Dynamic ARP Inspection in your network environment or using static ARP entries.", "product_ids": [ "CSAFPID-7047236", "CSAFPID-7047237", "CSAFPID-7047238", "CSAFPID-7047239", "CSAFPID-7047240" ] } ], "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-1330602", "CSAFPID-5525262", "CSAFPID-5525263", "CSAFPID-7046638", "CSAFPID-7047236", "CSAFPID-7047237", "CSAFPID-7047238", "CSAFPID-7047239", "CSAFPID-7047240", "CSAFPID-7067495", "CSAFPID-7067496", "CSAFPID-7067497", "CSAFPID-7067498", "CSAFPID-7067499", "CSAFPID-7067500", "CSAFPID-7067501", "CSAFPID-7067502", "CSAFPID-7067503" ] } ], "threats": [ { "category": "impact", "details": "System performance can degrade until the TMM process is either forced to restart or is manually restarted. This vulnerability allows an unauthenticated attacker on the local network to cause a degradation of service that can lead to a denial-of-service (DoS) on the BIG-IP system. There is no control plane exposure; this is a data plane issue only.", "product_ids": [ "CSAFPID-7047236", "CSAFPID-7047237", "CSAFPID-7047238", "CSAFPID-7047239", "CSAFPID-7047240" ] } ], "title": "CVE-2026-42781" } ] }