Cisco Catalyst SD-WAN Manager Authentication Bypass Vulnerability Exploited in Attacks (CVE-2026-76504)

Reported by Qualys (Diksha Ojha)

Summary by Cyber Security News1 Oct 2026, 09:57 CEST

About this summary. This is a short, independently written summary of an article first published by Qualys. Cyber Security News did not report or verify the underlying story. Read the original: https://threatprotect.qualys.com/2026/09/30/cisco-catalyst-sd-wan-manager-authentication-bypass-vulnerability-exploited-in-attacks-cve-2026-76504/

Cisco released a security advisory addressing a critical vulnerability affecting the Cisco Catalyst SD-WAN Manager. Tracked as CVE-2026-76504, successful exploitation of the vulnerability could allow an unauthenticated, remote attacker to access an affected system with admin privileges. Cisco mentioned in their advisory that they are aware of the vulnerability being exploited.

Read the full article at Qualys →

Cisco CVE-2026-76504

Source attribution: headline and facts are from Qualys (threatprotect.qualys.com). Summary method: excerpt of the source description. See our source attribution policy.