What is CVE-2025-54854?

CVE-2025-54854 is a high-severity vulnerability in F5 Big-ip, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2025-10-15.

How severe is CVE-2025-54854?

High severity. CVSS v3 base score is 7.5 out of 10.

Out-of-bounds Read in F5 Big-ip

CVE-2025-54854

When a BIG-IP APM OAuth access profile (Resource Server or Resource Client) is configured on a virtual server, undisclosed traffic can cause the apmd process to terminate. Note: Software versions which have reached End of Technical Suppor…

Vulnerability class: Buffer Overflow

EPSS: 0.003 (23.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

F5 Big-ip — versions 17.5.0, 17.1.0, 16.1.0
F5 Big-ip_access_policy_manager

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

f5sirt@f5.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2025-54854?: CVE-2025-54854 is a high-severity vulnerability in F5 Big-ip, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2025-10-15.
How severe is CVE-2025-54854?: High severity. CVSS v3 base score is 7.5 out of 10.