Cisco Catalyst SD-WAN Manager Hex Encoding Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 30/09/2026. Patch affected systems as an emergency.
| Package | Affected versions | Patched versions |
|---|---|---|
| catalyst sd-wan manager | = 26.2≥ 20.12, < 20.12.8.2≥ 20.15, < 20.15.6.1≥ 20.18, < 20.18.4.1≥ 26.1, < 26.1.2.1< 20.9.10.1 | 20.12.8.220.15.6.120.18.4.126.1.2.120.9.10.1 |
A vulnerability in the API session-based authentication management of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to access an affected system with privileges of the admin user. This vulnerability is due to improper handling of URI encoding in an HTTP request, which allows the request to bypass an authentication rule that is intended to restrict access to a specific API endpoint. An attacker could exploit this vulnerability by sending a crafted HTTP request to the API of the affected system. A successful exploit could allow the attacker to bypass authentication and gain access to the API as the admin user.
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free