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BIG-IP Advanced WAF CVE-2026-40060

| EUVD-2026-29969 HIGH
Unchecked Return Value (CWE-252)
2026-05-13 f5 GHSA-p3wj-9p5j-v2f9
8.7
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

4
Re-analysis Queued
May 13, 2026 - 16:22 vuln.today
cvss_changed
CVSS changed
May 13, 2026 - 16:22 NVD
7.5 (HIGH) 8.7 (HIGH)
Analysis Generated
May 13, 2026 - 15:48 vuln.today
CVE Published
May 13, 2026 - 14:12 nvd
HIGH 7.5

DescriptionNVD

When a BIG-IP Advanced WAF or ASM security policy is configured on a virtual server, undisclosed requests can cause the bd process to terminate.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

AnalysisAI

F5 BIG-IP Advanced WAF and Application Security Manager (ASM) suffer from a denial-of-service vulnerability when processing specially crafted requests against virtual servers with active security policies. Undisclosed malformed requests cause the bd process to terminate, disrupting service availability. …

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RemediationAI

Within 24 hours: Identify all F5 BIG-IP Advanced WAF and ASM instances in production and map them to F5 advisory K000160727 to determine affected versions. Within 7 days: Apply vendor patch per F5 advisory K000160727 to all affected systems following F5's documented upgrade procedure; perform rollback testing in staging beforehand. …

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CVE-2026-40060 vulnerability details – vuln.today

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