CVE-2026-20210

MediumCVSS 5.4/10Last modified Jun 29, 2026

Description

A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker with read-only permissions to modify configurations and perform unauthorized actions on an affected system. This vulnerability exists because of a failure to redact sensitive information within device configurations and templates. An attacker could exploit this vulnerability by elevating their read-only permissions to those of a high-privileged user. A successful exploit could allow the attacker to access or modify configuration settings within Cisco Catalyst SD-WAN Manager as a high-privileged user.

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Weakness enumeration

CWE-779

Affected software

No affected versions have been published.

Timeline

Published
May 14, 2026
Last modified
Jun 29, 2026
NVD status
Analyzed

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CVE-2026-20210: Medium severity, CVSS 5.4 | Vulnix