Denial of Service Vulnerability in BIG-IP Advanced WAF by F5 Networks
CVE-2026-40060

8.7HIGH

Key Information:

Vendor

F5
Status
Big-ip
Vendor
CVE Published:
13 May 2026

What is CVE-2026-40060?

A specific configuration of security policies on F5 Networks' BIG-IP Advanced Web Application Firewall (WAF) or Application Security Manager (ASM) can lead to unexpected terminations of the bd process due to undisclosed request patterns. This vulnerability poses potential risks for stability and availability, impacting web application performance and security posture.

Affected Version(s)

BIG-IP 21.0.0 < 21.0.0.1

BIG-IP 17.5.0 < 17.5.1.4

BIG-IP 17.1.0 < 17.1.3.1

References

https://my.f5.com/manage/s/article/K000160727
vendor-advisorypatch

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

F5
.