A state-sponsored threat actor known as UAT-4356 is actively exploiting known vulnerabilities in Cisco Firepower devices to deploy a sophisticated custom backdoor. UAT-4356 exploited two n-day vulnerabilities, CVE-2025-20333 and CVE-2025-20362m affecting Cisco’s Firepower eXtensible Operating System (FXOS). These flaws allowed the threat actor to gain unauthorized access to targeted devices without requiring zero-day capabilities, instead weaponizing already-patched but unmitigated vulnerabilities […]

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Source: gbHackers
Source Link: https://gbhackers.com/hackers-exploit-cisco-firepower-n-day-flaws/