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CVE-2025-53521
CWE-121
Critical
96.0
RPSRPS range: 0–105; KEV-listed vulnerabilities can receive an exploitation amplifier.
Description
When a BIG-IP APM access policy is configured on a virtual server, specific malicious traffic can lead to Remote Code Execution (RCE). Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Source: NVD
Signals
- CVSS
- 9.8
- Critical · v3.1
- EPSS
- 2.29%
- Probability of exploitation in the next 30 days (FIRST)
- CISA KEV
- In CISA KEV since Mar 2026
- Fix commit
- No known fix commit
- Sources: MoreFixes, FreshFixes
- Weakness
- CWE-121
- Published
- 15 Oct 2025
- Last modified 2 Apr 2026
How to read these signals: RPS · EPSS · CISA KEV · Data sources
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Data as of 7 Oct 2026, 05:16 UK time