Increased Resource Utilization in F5's Virtual Server and DNSSEC Operations
CVE-2025-21087

8.9HIGH

Key Information:

Vendor

F5
Status
Big-ip
Big-ip Next
Vendor
CVE Published:
5 February 2025

What is CVE-2025-21087?

A vulnerability exists in F5's BIG-IP product when Client or Server SSL profiles are configured on a Virtual Server, or during DNSSEC signing operations. Undisclosed traffic may lead to an unexpected increase in memory and CPU utilization, impacting performance and potentially resulting in service disruption.

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Affected Version(s)

BIG-IP 17.1.0 < 17.1.2

BIG-IP 16.1.0

BIG-IP 15.1.0

References

https://my.f5.com/manage/s/article/K000134888
vendor-advisory

CVSS V4

Score:
8.9
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

F5
JSON
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