Detections
Analytics
Cisco Catalyst SD-WAN Controller / Manager Authentication Bypass (cisco-sa-sdwan-rpa-EHchtZk)
critical Nessus Plugin ID 299998
Synopsis
The remote device is missing a vendor-supplied security patch.Description
According to its self-reported version, Cisco SD-WAN Viptela Software is affected by a vulnerability:- A vulnerability in the peering authentication in Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, and Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system.
(CVE-2026-20127)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCws52722.See Also
Plugin Details
Severity: Critical
ID: 299998
File Name: cisco-sa-sdwan-rpa-EHchtZk.nasl
Version: 1.1
Type: local
Family: CISCO
Published: 2/26/2026
Updated: 2/26/2026
Supported Sensors: Nessus
Risk Information
CVSS v2
Risk Factor: Critical
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2026-20127
CVSS v3
Risk Factor: Critical
Base Score: 10
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Vulnerability Information
CPE: cpe:/o:cisco:sd-wan_firmware
Required KB Items: Cisco/Viptela/Version
Patch Publication Date: 2/25/2026
Vulnerability Publication Date: 2/25/2026
Reference Information
CVE: CVE-2026-20127