Cisco Warns of Active Exploitation of Email Gateway Vulnerability

Cisco has alerted users to a critical zero-day vulnerability in its Secure Email Gateway, identified as CVE-2026-76461, which is currently being exploited. This flaw, with a CVSS score of 9.8, allows remote attackers to execute commands with root privileges through crafted emails. The U.S. Cybersecurity and Infrastructure Security Agency has included this vulnerability in its Known Exploited Vulnerabilities catalog, urging immediate patching.