Critical Cisco SD-WAN Vulnerability Under Active Exploitation

A critical vulnerability (CVE-2026-76504) in Cisco Catalyst SD-WAN Manager is being actively exploited, allowing unauthenticated remote attackers to gain administrative access. The flaw, rated 9.8 CVSS v3.1, stems from improper URI encoding. Cisco has released security updates, urging users to patch immediately to prevent unauthorized access and potential network compromise.