Buffer Overflow Vulnerability in F5 BIG-IP Advanced WAF and ASM
CVE-2025-61938

8.7HIGH

Key Information:

Vendor

F5
Status
Big-ip
Vendor
CVE Published:
15 October 2025

What is CVE-2025-61938?

A buffer overflow vulnerability exists in the F5 BIG-IP Advanced WAF and ASM security policies when a URL exceeds 1024 characters in the Data Guard Protection Enforcement setting. This can result in the bd process terminating unexpectedly, which may disrupt service availability. It is important to ensure that configurations do not exceed this limit and to apply any available patches to mitigate potential risks.

Affected Version(s)

BIG-IP 17.5.0 < 17.5.1

BIG-IP 17.1.0 < 17.1.3

BIG-IP 16.1.0

References

https://my.f5.com/manage/s/article/K000156624
vendor-advisory

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
JSON
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CVE-2025-61938 : Buffer Overflow Vulnerability in F5 BIG-IP Advanced WAF and ASM