CVE-2026-20210

Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerability

State: Published
Severity: 5.4 Medium
Published: May 14, 2026
Updated: May 15, 2026
Reserved: Oct 8, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	5.4 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N	cisco

Weaknesses

CWE-779 Logging of Excessive Data

Affected Products

Product	Versions
Cisco Catalyst SD-WAN ManagerCisco	20.1.12Affected 19.2.1Affected 18.4.4Affected 18.4.5Affected 20.1.1.1Affected 20.1.1Affected 19.3.0Affected 19.2.2Affected 19.2.099Affected 18.3.6Affected 18.3.7Affected 19.2.0Affected 18.3.8Affected 19.0.0Affected 19.1.0Affected 18.4.302Affected 18.4.303Affected 19.2.097Affected 19.2.098Affected 17.2.10Affected 18.3.6.1Affected 19.0.1aAffected 18.2.0Affected 18.4.3Affected 18.4.1Affected and 331 more versions

Product

Versions

Cisco Catalyst SD-WAN ManagerCisco

20.1.12Affected
19.2.1Affected
18.4.4Affected
18.4.5Affected
20.1.1.1Affected
20.1.1Affected
19.3.0Affected
19.2.2Affected
19.2.099Affected
18.3.6Affected
18.3.7Affected
19.2.0Affected
18.3.8Affected
19.0.0Affected
19.1.0Affected
18.4.302Affected
18.4.303Affected
19.2.097Affected
19.2.098Affected
17.2.10Affected
18.3.6.1Affected
19.0.1aAffected
18.2.0Affected
18.4.3Affected
18.4.1Affected
and 331 more versions

References

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