What’s Vulnerable › Vulnerabilities
CVE-2026-20126: Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerability
- Severity: high (CVSS 7.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-02-25 · updated 2026-06-17
- Weakness: CWE-648
Description
A vulnerability in Cisco Catalyst SD-WAN Manager could allow an authenticated, local attacker with low privileges to gain root privileges on the underlying operating system. This vulnerability is due to an insufficient user authentication mechanism in the REST API. An attacker could exploit this vulnerability by sending a request to the REST API of the affected system. A successful exploit could allow the attacker to gain root privileges on the underlying operating system.
Affected products
- Cisco Catalyst SD-WAN Manager: before 20.9.8.2; from 20.11 before 20.12.5.3; from 20.13 before 20.15.4.2; from 20.16 before 20.18.2.1; 20.12.6 — fixed in 20.12.5.3, 20.15.4.2, 20.18.2.1, 20.9.8.2
How to fix
Upgrade to a fixed version: Cisco Catalyst SD-WAN Manager 20.12.5.3, 20.15.4.2, 20.18.2.1, 20.9.8.2. Check the vendor advisory for mitigations.
References
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