CVE-2025-21087

TMM Vulnerability

Description

When Client or Server SSL profiles are configured on a Virtual Server, or DNSSEC signing operations are in use, undisclosed traffic can cause an increase in memory and CPU resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

Category

8.9
CVSS
Severity: High
CVSS 4.0 •
CVSS 3.1 •
EPSS 0.11%
Vendor Advisory f5.com
Affected: F5 BIG-IP
Affected: F5 BIG-IP Next
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2025-21087?
CVE-2025-21087 has been scored as a high severity vulnerability.
How to fix CVE-2025-21087?
To fix CVE-2025-21087, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-21087 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-21087 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-21087?
CVE-2025-21087 affects F5 BIG-IP, F5 BIG-IP Next.
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