CVE-2026-42781

BIG-IP FastL4 virtual server vulnerability

CVSS 7.1 HIGHEPSS 0.2%CWE-835

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.1EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

13 May 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Affected products

F5 · BIG-IP

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References

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