The StrikeShark campaign utilizes a novel malware family named SharkLoader to deploy Cobalt Strike Beacons across various global sectors. Threat actors gain initial access by exploiting known vulnerabilities in public-facing applications or distributing custom droppers disguised as legitimate software. SharkLoader employs advanced evasion techniques, including Perfect DLL Hijacking and extensive API hooking, to bypass loader locks and conceal its execution in memory.
F5 BIG-IP
4 posts
StrikeShark: investigating a new campaign delivering Cobalt Strike through SharkLoader March 2026 CVE Landscape: 31 High-Impact Vulnerabilities Identified, Interlock Ransomware Group Exploits Cisco FMC Zero-Day In March 2026, 31 high-impact vulnerabilities were actively exploited, highlighted by the Interlock Ransomware Group leveraging a CVSS 10.0 zero-day in Cisco Secure FMC (CVE-2026-20131). The attackers utilized insecure Java deserialization to gain root access, deploying custom RATs, memory-resident web shells, and ransomware across enterprise networks.
Vulnerability affecting F5 BIG-IP APM The NCSC has issued an urgent alert regarding CVE-2025-53521, an actively exploited, unauthenticated remote code execution vulnerability in F5 BIG-IP Access Policy Manager (APM). Organizations are strongly advised to investigate for compromise using vendor-provided indicators, apply updates immediately, and potentially rebuild affected systems if evidence of compromise is found.
CISA Adds One Known Exploited Vulnerability to Catalog CISA has added CVE-2025-53521, a Remote Code Execution vulnerability affecting F5 BIG-IP, to its Known Exploited Vulnerabilities (KEV) Catalog due to evidence of active exploitation. All organizations are strongly urged to prioritize timely remediation to reduce exposure to cyberattacks.
