CVE-2026-41218 — BIG-IP PEM iRules vulnerability

CVE-2026-41218

BIG-IP PEM iRules vulnerability PUBLISHED

Description (CNA)

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 (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected (CNA)

Vendor / product	Versions
F5 / BIG-IP	unaffected 21.1.0 before ; affected 21.0.0 before 21.0.0.1; affected 17.5.0 before 17.5.1.4; affected 17.1.0 before 17.1.3.1; affected 16.1.0 before

CWE

CWE-416

References

https://my.f5.com/manage/s/article/K000160875

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.