{"id":"CVE-2026-41218","title":"When BIG-IP PEM iRules are configured on a virtual server (iRules using commands starting with CLASSIFICATION::, CLASSIFY::, PEM::, PSC::, and the urlcatquery command), undisclosed traffic can cause the Traffic Management Microkernel (TM…","summary":"When BIG-IP PEM iRules are configured on a virtual server (iRules using commands starting with CLASSIFICATION::, CLASSIFY::, PEM::, PSC::, and the urlcatquery command), undisclosed traffic can cause the Traffic Management Microkernel (TM…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-416"],"published":"2026-05-13","updated":"2026-06-24","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-41218","references":[{"url":"https://my.f5.com/manage/s/article/K000160875","label":"f5sirt@f5.com"}],"tags":["nvd"],"epss":0.00263,"epssPercentile":0.18416,"ingestedAt":"2026-06-29T13:24:35.015Z","slug":"CVE-2026-41218","body":"## Overview\n\nWhen BIG-IP PEM iRules are configured on a virtual server (iRules using commands starting with CLASSIFICATION::, CLASSIFY::, PEM::, PSC::, and the urlcatquery command), undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}