26 Sep, 2026

F5 patches BIG-IP APM zero-day flaw exploited in RCE attacks

F5 has released security updates to address a critical BIG-IP APM zero-day vulnerability being exploited in remote code execution attacks. BIG-IP APM (short for Access Policy Manager) is the company’s centralized access management proxy solution that helps admins secure access to their organizations’ networks, applications, cloud, and application programming interfaces (APIs). Tracked as CVE-2026-94127, the […]

2 mins read

Hackers breach F5 BIG-IP APM devices to deploy Linux rootkit

A Linux rootkit targeting devices in F5 BIG-IP APM environments can intercept PHP file loading and inject a fileless web shell directly into memory, avoiding the need to write malicious code to disk. The malware shows signs of being a second-stage payload that was likely deployed after exploiting CVE-2025-53521, a critical remote code execution (RCE) flaw […]

3 mins read

Over 14,000 F5 BIG-IP APM instances still exposed to RCE attacks

Internet threat-monitoring non-profit Shadowserver has found over 14,000 BIG-IP APM instances exposed online amid ongoing attacks exploiting a critical-severity remote code execution (RCE) vulnerability. BIG-IP APM (short for Access Policy Manager) is F5’s centralized access management proxy solution designed to help admins secure access to their organizations’ networks, cloud, applications, and application programming interfaces (APIs). […]

2 mins read