Cisco email security boxes can be rooted by... an email

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.

https://www.theregister.com/security/2026/09/15/cisco-email-security-boxes-can-be-rooted-by-an-email/5296604