CVE Vulnerabilities

CVE-2026-20126

Incorrect Use of Privileged APIs

Published: Feb 25, 2026 | Modified: Mar 04, 2026
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu
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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.

Weakness

The product does not conform to the API requirements for a function call that requires extra privileges. This could allow attackers to gain privileges by causing the function to be called incorrectly.

Affected Software

NameVendorStart VersionEnd Version
Catalyst_sd-wan_managerCisco*20.9.8.2 (excluding)
Catalyst_sd-wan_managerCisco20.11 (including)20.12.5.3 (excluding)
Catalyst_sd-wan_managerCisco20.13 (including)20.15.4.2 (excluding)
Catalyst_sd-wan_managerCisco20.16 (including)20.18.2.1 (excluding)
Catalyst_sd-wan_managerCisco20.12.6 (including)20.12.6 (including)

Extended Description

When a product contains certain functions that perform operations requiring an elevated level of privilege, the caller of a privileged API must be careful to:

If the caller of the API does not follow these requirements, then it may allow a malicious user or process to elevate their privilege, hijack the process, or steal sensitive data. For instance, it is important to know if privileged APIs do not shed their privileges before returning to the caller or if the privileged function might make certain assumptions about the data, context or state information passed to it by the caller. It is important to always know when and how privileged APIs can be called in order to ensure that their elevated level of privilege cannot be exploited.

Potential Mitigations

References