A state-sponsored threat actor tracked as UAT-4356 is actively exploiting known vulnerabilities in Cisco Firepower devices to gain unauthorized access and deploy a sophisticated custom backdoor. The campaign leverages two n-day vulnerabilities, CVE-2025-20333 and CVE-2025-20362, impacting Cisco’s Firepower eXtensible Operating System (FXOS). Unlike zero-day attacks, these exploits rely on already disclosed and patched flaws. However, […] The post Hackers Exploit Cisco Firepower Devices Using N-Day Vulnerabilities to Gain Unauthorized Access appeared first on Cyber Security News.