CVE-2026-42781 — BIG-IP FastL4 virtual server vulnerability

CVE-2026-42781

BIG-IP FastL4 virtual server vulnerability PUBLISHED

Description (CNA)

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.

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; unaffected 16.1.0 before

CWE

CWE-835

References

https://my.f5.com/manage/s/article/K000160862

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.