Description
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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| F5 | BIG-IP | 21.0.0 – < 21.0.0.1, 17.5.0 – < 17.5.1.4, 17.1.0 – < 17.1.3.1, 16.1.0 | 21.0.0.1 |
Advisories 2
- NCSC-2026-0162 Kwetsbaarheden verholpen in F5 BIG-IP en BIG-IQ producten NCSC-NL (Netherlands) · May 15, 2026
- WID-SEC-2026-1532 F5 BIG-IP Produkte: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 14, 2026
References
- https://my.f5.com/manage/s/article/K000160875 vendor-advisory patch