CVE-2025-36557

BIG-IP HTTP vulnerability

Description

When an HTTP profile with the Enforce RFC Compliance option is configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Category

8.7
CVSS
Severity: High
CVSS 4.0 •
CVSS 3.1 •
EPSS 0.10%
Vendor Advisory f5.com
Affected: F5 BIG-IP
Affected: F5 BIG-IP Next SPK
Affected: F5 BIG-IP Next CNF
Published at:
Updated at:

References

Link Tags
https://my.f5.com/manage/s/article/K000139571 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2025-36557?
CVE-2025-36557 has been scored as a high severity vulnerability.
How to fix CVE-2025-36557?
To fix CVE-2025-36557, 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-2025-36557 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-36557 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-2025-36557?
CVE-2025-36557 affects F5 BIG-IP, F5 BIG-IP Next SPK, F5 BIG-IP Next CNF.
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