CVE-2025-53521
F5 BIG-IP Stack-Based Buffer Overflow Vulnerability
CVSS
9.8
Crítico
EPSS
2.3%
p83
KEV
SÍ
27 mar 2026
Exploit Today
75
0-100
Publicado: 15 oct 2025 · Última mod.: 8 oct 2026 · CWE-121
Producto
F5 / BIG-IP
Vulnerabilidad
F5 BIG-IP Stack-Based Buffer Overflow Vulnerability
Añadido a KEV
27 mar 2026
Remediar antes de
30 mar 2026
Uso conocido en ransomware
No
Descripción resumida
F5 BIG-IP APM contains a stack-based buffer overflow vulnerability that could allow a threat actor to achieve remote code execution.
Acción requerida
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notas
Please adhere to F5’s guidelines to assess exposure and mitigate risks. Check for signs of potential compromise on all internet accessible F5 products affected by this vulnerability. For more information please see: https://my.f5.com/manage/s/article/K000156741 ; https://my.f5.com/manage/s/article/K000160486 ; https://my.f5.com/manage/s/article/K11438344 ; https://nvd.nist.gov/vuln/detail/CVE-2025-53521
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.