GCVE-110-NCSC-2026-395

Advisory PublishedCVSS 9.8/10

Vulnetix · Advisory published September 30, 2026

A vulnerability in Cisco Catalyst SD-WAN Manager's API session authentication allows unauthenticated remote attackers to bypass authentication via improper URI encoding, potentially granting admin-level access.

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Weaknesses (CWE)

CWE-177Improper Handling of URL Encoding (Hex Encoding)

Risk Scores

CVSS 3.1

9.8/10

Critical · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products

Vendor	Product	Versions	Platforms
Cisco	vers:unknown/*	—	—

Aliases

CVE-2026-76504

References

advisory

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