Cisco make-me-root email bug exploited as a 0-day by unknown crims

Cisco “strongly” implored customers to patch yet another critical, make-me-root vulnerability in its Secure Email Gateway (SEG), one that has already been exploited in zero-day attacks. A Cisco spokesperson told The Register that the critical vuln, which received a 9.8 out of 10 CVSS rating, affects “a limited number of customers.” The bug, now tracked as CVE‑2026‑76519, allows remote, unauthenticated attackers to write files and execute commands with root pri