CVE-2026-76461: Active Exploitation of Cisco Secure Email Gateway Critical Zero-Day Vulnerability Immediate Mitigation Required
CVE-2026-76461 is a pre-authentication SQL injection vulnerability in the email parsing logic of Cisco Secure Email Gateway (AsyncOS). This vulnerability enables unauthenticated remote threat actors to execute arbitrary code as root by sending crafted, malicious emails. This grants threat actors full control over the operating system, allowing data exfiltration, email surveillance, persistent access, and potential network pivoting, all without user interaction or credentials.