CRITICALVulnerability
Verified
Global

NVD CRITICAL: CVE-2026-76504 — A vulnerability in the API session-based authentication management of Cisco Cata...

·Source: NIST NVD

Updated:

Executive Summary

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 spe

Analysis

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. CVSS Score: 9.8. Published: 2026-09-30T13:17:20.247.

Indicators of Compromise (1)

CVE (1)
CVE-2026-76504
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Sep 30, 2026. Verified by: NIST.

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