Cisco has issued a warning regarding a critical vulnerability (CVE-2026-76461) affecting AsyncOS Software for Cisco Secure Email Gateway, which is under active exploitation. The flaw, bearing a CVSS score of 9.8, stems from improper input validation within the email parsing logic. This allows unauthenticated, remote threat actors to achieve root command execution on targeted appliances. Administrators must apply available patches immediately to mitigate exposure.
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