CVE-2026-20224
Cisco Catalyst SD-WAN Manager XML External Entity Injection Vulnerability
Description
A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an unauthenticated, remote attacker to read arbitrary files that are stored in an affected system. The attacker does not need to have valid user credentials. This vulnerability is due to improper handling of XML External Entity (XXE) entries when parsing an XML file. An attacker could exploit this vulnerability by sending a crafted request to an affected system. A successful exploit could allow the attacker to read arbitrary files that are stored in the affected system.
Weakness: CWE-20
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