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// CVE · PUBLISHED 2026-09-30

CVE-2026-76504

Cisco / Cisco Catalyst SD-WAN Manager

9.8 · CVSS 3.1CriticalCISA KEV

CISA lists this CVE as exploited in the wild. Patch it before anything rated by score alone.

Description

A vulnerability in the API session-based authentication management of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to access an affected system with privileges of the admin user. This vulnerability is due to improper handling of URI encoding in an HTTP request, which allows the request to bypass an authentication rule that is intended to restrict access to a specific API endpoint. An attacker could exploit this vulnerability by sending a crafted HTTP request to the API of the affected system. A successful exploit could allow the attacker to bypass authentication and gain access to the API as the admin user.

References

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This product uses the NVD API but is not endorsed or certified by the NVD. CVSS scores do not establish exploitation.