CVE-2026-42781
BIG-IP FastL4 virtual server vulnerability
Description
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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:AAttack VectorAdjacent
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:NIntegrityNone
A:HAvailabilityHigh
Weaknesses
Affected Products
big-ip advanced web application firewallf5
On-premSecurity Product
Networking Infrastructure / firewall and 17 more affected products View all →
Exploitability
Workaround Available
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
1 technique Impact
References
Timeline
Published
May 13, 2026
Last Updated
Jun 23, 2026
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