CVE-2026-20126
High
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.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Cisco Catalyst Sd-wan Manager
PublishedFeb 25, 2026
First seenFeb 25, 2026
Weakness typeCWE-648CWE-648
How to fix
Update
- cisco catalyst_sd-wan_manager20.9.8.2, 20.12.5.3, 20.15.4.2, 20.18.2.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco catalyst_sd-wan_manager | v < 20.9.8.2, 20.11 ≤ v < 20.12.5.3, 20.13 ≤ v < 20.15.4.2, 20.16 ≤ v < 20.18.2.1, 20.12.6 | 20.9.8.2, 20.12.5.3, 20.15.4.2, 20.18.2.1 |
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