Improper authorization in Catalyst SD-WAN Manager (formerly SD-WAN vManage) - CVE-2026-20126

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Main Vulnerability Database Vulnerabilities #VU123269

Improper authorization in Catalyst SD-WAN Manager (formerly SD-WAN vManage) - CVE-2026-20126

Published: February 25, 2026


Vulnerability identifier: #VU123269
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-20126
CWE-ID: CWE-285
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Catalyst SD-WAN Manager (formerly SD-WAN vManage)

Detailed vulnerability description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to insufficient authorization checks in the REST API. A local low-privileged user can execute arbitrary code with root privileges. 


How to mitigate CVE-2026-20126

Install updates from vendor's website.

Sources