Cisco Warns of Attackers Exploiting Critical Authentication Bypass in SD-WAN Manager

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Summary by Cyber Security News30 Sep 2026, 17:24 CEST

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Attackers are exploiting a critical flaw in Cisco Catalyst SD-WAN Manager, the system companies use to manage their Cisco SD-WAN networks, Cisco said in an advisory on September 30. The flaw, CVE-2026-76504, could allow a remote attacker with no login access to use the Manager's API as the admin user. Fixed releases are available, and there is no workaround.

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