XSS in F5 Big-ip

CVE-2025-59269

A stored cross-site scripting (XSS) vulnerability exists in an undisclosed page of the BIG-IP Configuration utility that allows an attacker to run JavaScript in the context of the currently logged-in user.   Note: Software versions which…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (16.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-59269?
CVE-2025-59269 is a medium-severity vulnerability in F5 Big-ip, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-10-15.
How severe is CVE-2025-59269?
Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2025-59269 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.