CVE-2026-76519

Summary

Cisco Secure Email Gateway's AMP feature has a flaw where unauthenticated attackers can write arbitrary files to the OS and execute commands as root, due to improper handling of email attachments with file reputation service enabled.

Exploitability

Exploitation is straightforward requiring only sending a crafted email attachment through the affected device, with no authentication or user interaction needed.

Blast radius

The vulnerability could impact organizations using Cisco Secure Email Gateway with AMP enabled, potentially allowing full system compromise and privilege escalation to root access.

Detection

No reliable host or network indicator is derivable from the published description.

Prioritized remediation

Disable the Advanced Malware Protection (AMP) feature immediately until a patch is available, as no fixed version is published in the description.

Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.