EUVD-2026-30002
GHSA-543h-qfcx-5xww
Severity by source
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from Vendor (f5) · only source for this CVE.
CVSS VectorVendor: f5
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
5DescriptionCVE.org
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.
AnalysisAI
Denial of service in F5 BIG-IP when Packet Velocity Acceleration (ePVA) is enabled allows local network attackers to exhaust ePVA and Traffic Management Microkernel (TMM) resources through crafted ethernet traffic, causing service degradation or unavailability. CVSS 6.5 (medium severity) reflects adjacent network access requirement and high availability impact. Patch availability confirmed via vendor advisory.
Technical ContextAI
F5 BIG-IP implements embedded Packet Velocity Acceleration (ePVA) as a hardware acceleration feature to optimize traffic processing. The Traffic Management Microkernel (TMM) manages resource allocation for network traffic. The vulnerability exploits improper resource handling in the ePVA subsystem when processing locally-reachable ethernet frames; CWE-835 (infinite loop) indicates the root cause is likely unbounded iteration or resource consumption triggered by malformed or specifically-crafted local network packets. This affects systems where ePVA acceleration is explicitly configured as an enabled feature, not default deployments.
RemediationAI
Apply vendor-released patch from F5 article K000160862 (https://my.f5.com/manage/s/article/K000160862). Exact patched versions not specified in provided data; consult F5 advisory for your BIG-IP version and ePVA configuration. As immediate compensating control, disable ePVA acceleration if acceptable for performance SLAs, or restrict local network access to trusted management and traffic source segments using network ACLs or VLAN isolation. Note: Disabling ePVA trades acceleration performance for availability; evaluate impact on throughput SLAs before implementing.
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Same technique Denial Of Service
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External POC / Exploit Code
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