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CVE-2025-53521· f5 / big-ip· CWE-121

F5 BIG-IP Stack-Based Buffer Overflow Vulnerability

Exploited in the wild. Listed by CISA on 2026-03-27; known to be used by ransomware.

2.3%likelihood of exploitation, next 30 days
84%of all CVEs are less likely
Nonecheck to confirm it

F5 BIG-IP APM contains a stack-based buffer overflow vulnerability that could allow a threat actor to achieve remote code execution.

No ready check is stored for this CVE. Confirm it by hand from the references.

References

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