CVE-2026-20210
Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerability
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.
Weakness: CWE-779
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco Catalyst SD-WAN Manager | Network & Security Management | cna-assigner |
Vendor-reported products (1)
- Cisco · Cisco Catalyst SD-WAN Manager
Vendor advisory
cisco-sa-sdwan-mltvnps2-JxpWm7R
Cisco Catalyst SD-WAN Manager Vulnerabilities
Cisco’s rating: Critical (advisory CVSS 8.6) · Published May 14, 2026
Bug IDs: CSCwt38739 , CSCwt38767 , CSCwt55544
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from