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Cisco Secure Email Gateway contains a critical flaw (CVE-2026-76461) allowing attackers to gain root access via malicious email. The 9.8 CVSS vulnerability affects all appliances with no workarounds, requiring immediate patching. Email security professionals must prioritize updates to prevent full system compromise.
Cisco disclosed an actively exploited zero-day in Secure Email Gateway (CVE-2026-76461) allowing remote unauthenticated command execution with root privileges. Attackers have already exploited this critical flaw before patching, potentially compromising email infrastructure and gateway integrity.
Cisco Secure Email Gateway has a critical vulnerability (CVE-2026-76461) with a 9.8 CVSS score in AsyncOS email parsing logic. Unauthenticated remote attackers can exploit it for root command execution. Active exploitation in the wild poses immediate risk to email infrastructure.
A zero-day root RCE vulnerability (CVE-2026-76461) in Cisco Secure Email Gateway is under active exploitation, allowing unauthenticated attackers to execute arbitrary commands with root privileges on affected systems.
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