Will Cisco SEG CVE-2026-76519 be added to CISA KEV by Oct 31?

Cisco has patched an actively exploited zero-day in Secure Email Gateway (SEG) allowing unauthenticated RCE with root privileges. Bleeping Computer reports exploitation in the wild. This new CVE is not yet in CISA's Known Exploited Vulnerabilities catalog despite active attacks.

Resolution Criteria

CISA KEV Catalog official announcement or advisory listing CVE-2026-76519 with evidence of active exploitation. Moderator checks CISA website or official press release.