EXPOSURES › CVE-2025-53521
CVE-2025-53521
HIGH ⌖ ON CISA KEV · EXPLOITEDF5 BIG-IP APM stack-based buffer overflow enables remote code execution and is actively exploited in the wild.
This vulnerability allows threat actors to achieve remote code execution on F5 BIG-IP APM systems, posing a critical risk to DIB organizations relying on F5 for traffic management and security. The active exploitation status indicates immediate exposure, requiring urgent patching and network segmentation to prevent unauthorized access to sensitive data.
Shame score — Active exploitation of a remote code execution vulnerability in a critical network security product indicates severe negligence and immediate threat to DIB infrastructure.
▸ RECOMMENDED ACTION Actively exploited (CISA KEV) — remediate now, ahead of your normal patch cycle.
F5 BIG-IP APM contains a stack-based buffer overflow vulnerability that could allow a threat actor to achieve remote code execution.