CVE-2026-20126

EUVD-2026-8674
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.8 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
ciscocatalyst_sd-wan_manager
𝑥
< 20.9.8.2
ciscocatalyst_sd-wan_manager
20.11 ≤
𝑥
< 20.12.5.3
ciscocatalyst_sd-wan_manager
20.13 ≤
𝑥
< 20.15.4.2
ciscocatalyst_sd-wan_manager
20.16 ≤
𝑥
< 20.18.2.1
ciscocatalyst_sd-wan_manager
20.12.6
𝑥
= Vulnerable software versions