GoKawiilCisco patches actively exploited zero-day in Secure Email Gateway software
Cisco released fixes for CVE-2026-76461, a critical flaw in AsyncOS Software for Secure Email Gateway that lets unauthenticated attackers run root-level commands by sending crafted emails with malicious SQL statements. The company confirmed it detected active exploitation of the bug in September 2026 and issued indicators of compromise for defenders to check mail logs and network traffic. CISA has added the flaw to its Known Exploited Vulnerabilities catalog, giving federal agencies until September 17 to patch.