Cisco Talos discovered a cyberattack campaign targeting Cisco AsyncOS Software for Cisco Secure Email Gateway and Cisco Secure Email and Web Manager. Tracked as CVE-2025-20939, the vulnerability may allow an attacker to execute arbitrary commands with root privileges on the underlying operating system of targeted appliances. The vulnerability has a critical severity rating with a … Continue reading “Cisco Releases Fix for Actively Exploited Zero-day Vulnerability (CVE-2025-20393)”