CVE-2025-53521
F5 BIG-IP Stack-Based Buffer Overflow Vulnerability
9.3
CVSS 4.0
2.3 %
EPSS (current)
2026-03-27
KEV addition
No
Ransomware
Timeline
Publication, first public exploit and KEV addition on a day axis.
Key facts
Vendor / product: F5 / BIG-IP
Published: 2025-10-15 · Due (CISA): 2026-03-30
CWE: CWE-121 · EU list: no
Exploit references (metadata only)
No public exploit references recorded.