Secure Bulletin Navigating the cyber sea with knowledge
Home > Tag > CVE-2025-53521
#CVE-2025-53521

Stealth Linux Rootkit Hides Fileless Web Shells Inside F5 BIG-IP Memory

8 September 2026  |  dark6  |  Malware

Researchers have uncovered a Linux rootkit that alters PHP code only in memory on compromised F5 BIG-IP APM appliances. Its fileless web shell, local socket backdoor and upgrade...

>> read more