🛡️ **CRITICAL: Cisco SD-WAN Manager Authentication Bypass—Actively Exploited Zero-Day**
Published Thursday, October 01, 2026 at 11:52 AM PT BLUF: Cisco has disclosed CVE-2026-76504, a critical authentication bypass in Catalyst SD-WAN Manager allowing unauthenticated remote attackers to gain full administrative access to affected systems. The vulnerability is actively exploited in the wild. Organizations running Catalyst SD-WAN Manager must immediately: (1) inventory affected deployments, (2) check for indicators of compromise, and (3) monitor for official patches and interim mitigations from Cisco. ...