{"id":"CVE-2026-40618","state":"PUBLISHED","title":"BIG-IP SSL/TLS vulnerability","description":"When an SSL profile is configured on a virtual server on BIG-IP Virtual Edition (VE) without Intel QuickAssist Technology (QAT) or on BIG-IP hardware platforms with the database variable crypto.hwacceleration set to disabled, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate.  \n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","publishedAt":"2026-05-13T14:12:33.941Z","updatedAt":"2026-05-13T16:13:44.066Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","source":"f5"},"assigner":"f5","products":["F5 BIG-IP","F5 BIG-IP Next SPK","F5 BIG-IP Next CNF","F5 BIG-IP Next for Kubernetes"],"affected":[{"vendor":"F5","product":"BIG-IP","defaultStatus":"unknown","versions":[{"version":"21.1.0","status":"unaffected","lessThan":"*","versionType":"custom"},{"version":"21.0.0","status":"affected","lessThan":"21.0.0.1","versionType":"custom"},{"version":"17.5.0","status":"affected","lessThan":"17.1.5.4","versionType":"custom"},{"version":"17.1.0","status":"affected","lessThan":"17.1.3.1","versionType":"custom"},{"version":"16.1.0","status":"affected","lessThan":"*","versionType":"custom"}],"modules":["All Modules"]},{"vendor":"F5","product":"BIG-IP Next SPK","defaultStatus":"unknown","versions":[{"version":"2.0.0","status":"affected","lessThan":"*","versionType":"custom"},{"version":"1.7.0","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"F5","product":"BIG-IP Next CNF","defaultStatus":"unknown","versions":[{"version":"2.0.0","status":"affected","lessThan":"*","versionType":"custom"},{"version":"1.1.0","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"F5","product":"BIG-IP Next for Kubernetes","defaultStatus":"unaffected","versions":[{"version":"2.0.0","status":"affected","lessThan":"2.2.0","versionType":"custom"}]}],"references":["https://my.f5.com/manage/s/article/K000158082"],"weaknesses":["CWE-131"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/40xxx/CVE-2026-40618.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40618","state":"PUBLISHED","datePublished":"2026-05-13T14:12:33.941Z","dateUpdated":"2026-05-13T16:13:44.066Z","assignerShortName":"f5","assignerOrgId":"9dacffd4-cb11-413f-8451-fbbfd4ddc0ab","dateReserved":"2026-04-30T23:02:47.694Z"},"containers":{"cna":{"title":"BIG-IP SSL/TLS vulnerability","descriptions":[{"lang":"en","value":"When an SSL profile is configured on a virtual server on BIG-IP Virtual Edition (VE) without Intel QuickAssist Technology (QAT) or on BIG-IP hardware platforms with the database variable crypto.hwacceleration set to disabled, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate.  \n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated."}],"affected":[{"vendor":"F5","product":"BIG-IP","defaultStatus":"unknown","versions":[{"version":"21.1.0","status":"unaffected","lessThan":"*","versionType":"custom"},{"version":"21.0.0","status":"affected","lessThan":"21.0.0.1","versionType":"custom"},{"version":"17.5.0","status":"affected","lessThan":"17.1.5.4","versionType":"custom"},{"version":"17.1.0","status":"affected","lessThan":"17.1.3.1","versionType":"custom"},{"version":"16.1.0","status":"affected","lessThan":"*","versionType":"custom"}],"modules":["All Modules"]},{"vendor":"F5","product":"BIG-IP Next SPK","defaultStatus":"unknown","versions":[{"version":"2.0.0","status":"affected","lessThan":"*","versionType":"custom"},{"version":"1.7.0","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"F5","product":"BIG-IP Next CNF","defaultStatus":"unknown","versions":[{"version":"2.0.0","status":"affected","lessThan":"*","versionType":"custom"},{"version":"1.1.0","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"F5","product":"BIG-IP Next for Kubernetes","defaultStatus":"unaffected","versions":[{"version":"2.0.0","status":"affected","lessThan":"2.2.0","versionType":"custom"}]}],"references":[{"url":"https://my.f5.com/manage/s/article/K000158082","tags":["vendor-advisory","patch"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]},{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-131","description":"CWE-131 Incorrect Calculation of Buffer Size","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"f5","orgId":"9dacffd4-cb11-413f-8451-fbbfd4ddc0ab","dateUpdated":"2026-05-13T14:12:33.941Z"},"credits":[{"lang":"en","type":"finder","value":"F5"}],"datePublic":"2026-05-13T14:00:00.000Z","source":{"discovery":"INTERNAL"},"x_generator":{"engine":"F5 SIRTBot v1.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-13T16:01:48.970839Z","id":"CVE-2026-40618","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-13T16:13:44.066Z"}}]}}}