CVE-2026-20127 - Vulnerability Details

- Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability

Description

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.

This vulnerability exists because the peering authentication mechanism in an affected system is not working properly. An attacker could exploit this vulnerability by sending crafted requests to an affected system. A successful exploit could allow the attacker to log in to an affected Cisco Catalyst SD-WAN Controller as an internal, high-privileged, non-root user account. Using this account, the attacker could access NETCONF, which would then allow the attacker to manipulate network configuration for the SD-WAN fabric. 

Published: 2026-02-25

Score: 10 Critical

EPSS: 33.3% Moderate

KEV: Yes

Impact:

Action:

Analysis

Impact

A flaw in the peering authentication mechanism of Cisco Catalyst SD‑WAN Controller and Manager allows an unauthenticated, remote attacker to bypass authentication, log in as a high‑privileged non‑root user, and access NETCONF to manipulate the SD‑WAN fabric. The vulnerability is a classic authentication bypass (CWE‑287) that can compromise confidentiality, integrity, and availability of the network configuration.

Affected Systems

Affected are Cisco Catalyst SD‑WAN Manager and SD‑WAN vSmart Controller, specifically versions 20.12.6 and any release that has not yet incorporated the fix. The vulnerability can impact any installation of these products that uses the default peering authentication configuration.

Risk and Exploitability

The CVSS base score of 10 combined with an EPSS of 0.33% indicates a catastrophic severity but a low likelihood of exploitation. The vulnerability is catalogued by CISA’s Known Exploited Vulnerabilities list. Attackers can send crafted requests over the network to trigger the bypass; the vector is inferred to be remote over the peering or control plane interfaces, giving the attacker an internal, high‑privileged account without requiring credentials.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Cisco

Cisco Catalyst SD-WAN Manager

unknown

Version	Status	Constraints
`20.1.12`	affected	—
`19.2.1`	affected	—
`18.4.4`	affected	—
`18.4.5`	affected	—
`20.1.1.1`	affected	—
`20.1.1`	affected	—
`19.3.0`	affected	—
`19.2.2`	affected	—
`19.2.099`	affected	—
`18.3.6`	affected	—
`18.3.7`	affected	—
`19.2.0`	affected	—
`18.3.8`	affected	—
`19.0.0`	affected	—
`19.1.0`	affected	—
`18.4.302`	affected	—
`18.4.303`	affected	—
`19.2.097`	affected	—
`19.2.098`	affected	—
`17.2.10`	affected	—
`18.3.6.1`	affected	—
`19.0.1a`	affected	—
`18.2.0`	affected	—
`18.4.3`	affected	—
`18.4.1`	affected	—
`17.2.8`	affected	—
`18.3.3.1`	affected	—
`18.4.0`	affected	—
`18.3.1`	affected	—
`17.2.6`	affected	—
`17.2.9`	affected	—
`18.3.4`	affected	—
`17.2.5`	affected	—
`18.3.1.1`	affected	—
`18.3.5`	affected	—
`18.4.0.1`	affected	—
`18.3.3`	affected	—
`17.2.7`	affected	—
`17.2.4`	affected	—
`18.3.0`	affected	—
`19.2.3`	affected	—
`18.4.501_ES`	affected	—
`20.3.1`	affected	—
`20.1.2`	affected	—
`19.2.929`	affected	—
`19.2.31`	affected	—
`20.3.2`	affected	—
`19.2.32`	affected	—
`20.3.2_925`	affected	—
`20.3.2.1`	affected	—
`20.3.2.1_927`	affected	—
`18.4.6`	affected	—
`20.1.2_937`	affected	—
`20.4.1`	affected	—
`20.3.2_928`	affected	—
`20.3.2_929`	affected	—
`20.4.1.0.1`	affected	—
`20.3.2.1_930`	affected	—
`19.2.4`	affected	—
`20.5.0.1.1`	affected	—
`20.4.1.1`	affected	—
`20.3.3`	affected	—
`19.2.4.0.1`	affected	—
`20.3.2_937`	affected	—
`20.3.3.1`	affected	—
`20.5.1`	affected	—
`20.1.3`	affected	—
`20.3.3.0.4`	affected	—
`20.3.3.1.2`	affected	—
`20.3.3.1.1`	affected	—
`20.4.1.2`	affected	—
`20.3.3.0.2`	affected	—
`20.4.1.1.5`	affected	—
`20.4.1.0.01`	affected	—
`20.4.1.0.02`	affected	—
`20.3.3.1.7`	affected	—
`20.3.3.1.5`	affected	—
`20.5.1.0.1`	affected	—
`20.3.3.1.10`	affected	—
`20.3.3.0.8`	affected	—
`20.4.2`	affected	—
`20.4.2.0.1`	affected	—
`20.3.4`	affected	—
`20.3.3.0.14`	affected	—
`19.2.4.0.8`	affected	—
`19.2.4.0.9`	affected	—
`20.3.4.0.1`	affected	—
`20.3.2.0.5`	affected	—
`20.6.1`	affected	—
`20.5.1.0.2`	affected	—
`20.3.3.0.17`	affected	—
`20.6.1.1`	affected	—
`20.6.0.18.3`	affected	—
`20.3.2.0.6`	affected	—
`20.6.0.18.4`	affected	—
`20.4.2.0.2`	affected	—
`20.3.3.0.16`	affected	—
`20.3.4.0.5`	affected	—
`20.6.1.0.1`	affected	—
`20.3.4.0.6`	affected	—
`20.6.2`	affected	—
`20.7.1EFT2`	affected	—
`20.3.4.0.9`	affected	—
`20.3.4.0.11`	affected	—
`20.4.2.0.4`	affected	—
`20.3.3.0.18`	affected	—
`20.7.1`	affected	—
`20.6.2.1`	affected	—
`20.3.4.1`	affected	—
`20.5.1.1`	affected	—
`20.4.2.1`	affected	—
`20.4.2.1.1`	affected	—
`20.3.4.1.1`	affected	—
`20.3.813`	affected	—
`20.3.4.0.19`	affected	—
`20.4.2.2.1`	affected	—
`20.5.1.2`	affected	—
`20.3.4.2`	affected	—
`20.3.814`	affected	—
`20.4.2.2`	affected	—
`20.6.2.2`	affected	—
`20.3.4.2.1`	affected	—
`20.7.1.1`	affected	—
`20.3.4.1.2`	affected	—
`20.6.2.2.2`	affected	—
`20.3.4.0.20`	affected	—
`20.6.2.2.3`	affected	—
`20.4.2.2.2`	affected	—
`20.3.5`	affected	—
`20.6.2.0.4`	affected	—
`20.4.2.2.3`	affected	—
`20.3.4.0.24`	affected	—
`20.6.2.2.7`	affected	—
`20.6.3`	affected	—
`20.3.4.2.2`	affected	—
`20.4.2.2.4`	affected	—
`20.7.1.0.2`	affected	—
`20.8.1`	affected	—
`20.3.5.0.8`	affected	—
`20.3.5.0.9`	affected	—
`20.4.2.2.8`	affected	—
`20.3.5.0.7`	affected	—
`20.6.3.0.7`	affected	—
`20.6.3.0.5`	affected	—
`20.6.3.0.10`	affected	—
`20.6.3.0.2`	affected	—
`20.7.2`	affected	—
`20.9.1EFT2`	affected	—
`20.6.3.0.11`	affected	—
`20.6.3.1`	affected	—
`20.6.3.0.14`	affected	—
`20.6.4`	affected	—
`20.9.1`	affected	—
`20.6.3.0.19`	affected	—
`20.6.3.0.18`	affected	—
`20.3.6`	affected	—
`20.9.1.1`	affected	—
`20.6.3.0.23`	affected	—
`20.6.4.0.4`	affected	—
`20.6.3.0.25`	affected	—
`20.6.5`	affected	—
`20.6.3.0.27`	affected	—
`20.9.2`	affected	—
`20.9.2.1`	affected	—
`20.6.3.0.29`	affected	—
`20.6.3.0.31`	affected	—
`20.6.3.0.32`	affected	—
`20.10.1`	affected	—
`20.6.3.0.33`	affected	—
`20.9.2.0.01`	affected	—
`20.9.1_LI_Images`	affected	—
`20.10.1_LI_Images`	affected	—
`20.9.2_LI_Images`	affected	—
`20.3.7`	affected	—
`20.9.3`	affected	—
`20.6.5.1`	affected	—
`20.11.1`	affected	—
`20.11.1_LI_Images`	affected	—
`20.9.3_LI_ Images`	affected	—
`20.6.3.1.1`	affected	—
`20.9.3.0.2`	affected	—
`20.6.5.1.2`	affected	—
`20.9.3.0.3`	affected	—
`20.4.2.3`	affected	—
`20.6.3.2`	affected	—
`20.6.4.1`	affected	—
`20.6.3.0.38`	affected	—
`20.6.3.0.39`	affected	—
`20.3.5.1`	affected	—
`20.3.4.3`	affected	—
`20.9.3.1`	affected	—
`20.3.3.2`	affected	—
`20.6.5.2`	affected	—
`20.3.7.1`	affected	—
`20.10.1.1`	affected	—
`20.6.5.2.1`	affected	—
`20.3.4.0.25`	affected	—
`20.6.2.2.4`	affected	—
`20.6.1.2`	affected	—
`20.11.1.1`	affected	—
`20.9.3.0.5`	affected	—
`20.3.4.0.26`	affected	—
`20.6.5.1.3`	affected	—
`20.6.3.0.40`	affected	—
`20.1.3.1`	affected	—
`20.9.2.2`	affected	—
`20.6.5.2.3`	affected	—
`20.6.5.1.4`	affected	—
`20.6.5.3`	affected	—
`20.6.3.0.41`	affected	—
`20.9.3.0.7`	affected	—
`20.6.5.1.5`	affected	—
`20.9.3.0.4`	affected	—
`20.6.4.0.19`	affected	—
`20.6.5.1.6`	affected	—
`20.9.3.0.8`	affected	—
`20.6.3.3`	affected	—
`20.3.7.2`	affected	—
`20.6.5.4`	affected	—
`20.6.5.1.7`	affected	—
`20.9.3.0.12`	affected	—
`20.6.4.2`	affected	—
`20.6.5.5`	affected	—
`20.9.3.2`	affected	—
`20.11.1.2`	affected	—
`20.6.3.4`	affected	—
`20.10.1.2`	affected	—
`20.6.5.1.9`	affected	—
`20.9.3.0.16`	affected	—
`20.6.3.0.45`	affected	—
`20.6.5.1.10`	affected	—
`20.9.3.0.17`	affected	—
`20.6.5.2.4`	affected	—
`20.6.4.0.21`	affected	—
`20.9.3.0.18`	affected	—
`20.6.3.0.46`	affected	—
`20.6.3.0.47`	affected	—
`20.9.2.3`	affected	—
`20.9.3.2_LI_Images`	affected	—
`20.9.3.0.21`	affected	—
`20.9.3.0.20`	affected	—
`20.9.4_LI_Images`	affected	—
`20.9.4`	affected	—
`20.6.5.1.11`	affected	—
`20.12.1`	affected	—
`20.12.1_LI_Images`	affected	—
`20.6.5.1.13`	affected	—
`20.9.3.0.23`	affected	—
`20.6.5.2.8`	affected	—
`20.9.4.1`	affected	—
`20.9.4.1_LI_Images`	affected	—
`20.9.3.0.25`	affected	—
`20.9.3.0.24`	affected	—
`20.6.5.1.14`	affected	—
`20.3.8`	affected	—
`20.6.6`	affected	—
`20.9.3.0.26`	affected	—
`20.6.3.0.51`	affected	—
`20.9.3.0.29`	affected	—
`20.12.2`	affected	—
`20.12.2_LI_Images`	affected	—
`20.6.6.0.1`	affected	—
`20.13.1_LI_Images`	affected	—
`20.9.4.0.4`	affected	—
`20.13.1`	affected	—
`20.9.4.1.1`	affected	—
`20.9.5`	affected	—
`20.9.5_LI_Images`	affected	—
`20.12.3_LI_Images`	affected	—
`20.12.3`	affected	—
`20.9.4.1.3`	affected	—
`20.6.7`	affected	—
`20.9.5.1`	affected	—
`20.9.5.1_LI_Images`	affected	—
`20.9.4.1.6`	affected	—
`20.14.1`	affected	—
`20.14.1_LI_Images`	affected	—
`20.9.5.2`	affected	—
`20.9.5.2.1`	affected	—
`20.9.5.2_LI_Images`	affected	—
`20.12.3.1`	affected	—
`20.12.4`	affected	—
`20.15.1_LI_Images`	affected	—
`20.15.1`	affected	—
`20.9.5.1.4`	affected	—
`20.9.5.2.7`	affected	—
`20.9.5.2.13`	affected	—
`20.9.6`	affected	—
`20.9.6_LI_Images`	affected	—
`20.9.5.2.14`	affected	—
`20.6.8`	affected	—
`20.12.4.0.03`	affected	—
`20.16.1`	affected	—
`20.16.1_LI_Images`	affected	—
`20.12.4_LI_Images`	affected	—
`20.9.5.2.16`	affected	—
`20.12.4.0.4`	affected	—
`20.12.401`	affected	—
`20.9.5.3`	affected	—
`20.9.5.3_LI_Images`	affected	—
`20.12.4.1_LI_Images`	affected	—
`20.12.4.1`	affected	—
`20.9.5.2.21`	affected	—
`20.9.6.0.3`	affected	—
`20.12.4.0.6`	affected	—
`20.15.2_LI_Images`	affected	—
`20.15.2`	affected	—
`20.12.4_Monthly_ES5`	affected	—
`20.12.5`	affected	—
`20.12.5_LI_Images`	affected	—
`20.9.7_LI _Images`	affected	—
`20.9.7`	affected	—
`20.15.3`	affected	—
`20.15.3_ LI _Images`	affected	—
`20.12.501`	affected	—
`20.12.5.1_LI_Images`	affected	—
`20.12.5.1`	affected	—
`20.12.5.2_LI_Images`	affected	—
`20.12.5.2`	affected	—
`20.15.3.1`	affected	—
`20.15.4_LI_Images`	affected	—
`20.15.4`	affected	—
`20.9.7.1_LI _Images`	affected	—
`20.9.7.1`	affected	—
`20.18.1`	affected	—
`20.18.1_LI_Images`	affected	—
`20.12.6_LI_Images`	affected	—
`20.12.6`	affected	—
`20.12.5.1.01`	affected	—
`20.9.8`	affected	—
`20.9.8_LI_Images`	affected	—
`20.18.2`	affected	—
`20.15.4.1_LI_Images`	affected	—
`20.15.4.1`	affected	—
`20.18.2_LI_Images`	affected	—

Configuration 1 [-]

OR	cpe:2.3:a:cisco:catalyst_sd-wan_manager::::::::
	cpe:2.3:a:cisco:catalyst_sd-wan_manager::::::::
	cpe:2.3:a:cisco:catalyst_sd-wan_manager::::::::
	cpe:2.3:a:cisco:catalyst_sd-wan_manager::::::::
	cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.12.6:::::::*
	cpe:2.3:a:cisco:sd-wan_vsmart_controller::::::::
	cpe:2.3:a:cisco:sd-wan_vsmart_controller::::::::
	cpe:2.3:a:cisco:sd-wan_vsmart_controller::::::::
	cpe:2.3:a:cisco:sd-wan_vsmart_controller::::::::
	cpe:2.3:a:cisco:sd-wan_vsmart_controller:20.12.6:::::::*

No data.

Vendor Product Confidence Versions

Cisco

Catalyst Sd-wan Manager

91%

Version	Status	Scheme	Platform
`20.1.12`	affected	semver	—
`19.2.1`	affected	semver	—
`18.4.4`	affected	semver	—
`18.4.5`	affected	semver	—
`20.1.1.1`	affected	generic	—
`20.1.1`	affected	semver	—
`19.3.0`	affected	semver	—
`19.2.2`	affected	semver	—
`19.2.099`	affected	semver	—
`18.3.6`	affected	semver	—
`18.3.7`	affected	semver	—
`19.2.0`	affected	semver	—
`18.3.8`	affected	semver	—
`19.0.0`	affected	semver	—
`19.1.0`	affected	semver	—
`18.4.302`	affected	semver	—
`18.4.303`	affected	semver	—
`19.2.097`	affected	semver	—
`19.2.098`	affected	semver	—
`17.2.10`	affected	semver	—
`18.3.6.1`	affected	generic	—
`19.0.1a`	affected	generic	—
`18.2.0`	affected	semver	—
`18.4.3`	affected	semver	—
`18.4.1`	affected	semver	—
`17.2.8`	affected	semver	—
`18.3.3.1`	affected	generic	—
`18.4.0`	affected	semver	—
`18.3.1`	affected	semver	—
`17.2.6`	affected	semver	—
`17.2.9`	affected	semver	—
`18.3.4`	affected	semver	—
`17.2.5`	affected	semver	—
`18.3.1.1`	affected	generic	—
`18.3.5`	affected	semver	—
`18.4.0.1`	affected	generic	—
`18.3.3`	affected	generic	—
`17.2.7`	affected	semver	—
`17.2.4`	affected	semver	—
`18.3.0`	affected	semver	—
`19.2.3`	affected	semver	—
`18.4.501_ES`	affected	generic	—
`20.3.1`	affected	semver	—
`20.1.2`	affected	semver	—
`19.2.929`	affected	semver	—
`19.2.31`	affected	semver	—
`20.3.2`	affected	semver	—
`19.2.32`	affected	semver	—
`20.3.2_925`	affected	generic	—
`20.3.2.1`	affected	generic	—
`20.3.2.1`	affected	semver	—
`20.3.2.1`	affected	generic	—
`20.3.2.1`	affected	generic	—
`20.6.1`	affected	generic	—
`20.5.1`	affected	semver	—
`20.1.3`	affected	semver	—
`20.3.3`	affected	semver	—
`20.3.3.0.4`	affected	generic	—
`20.3.3.1.2`	affected	generic	—
`20.3.3.1.1`	affected	generic	—
`20.4.1.2`	affected	generic	—
`20.3.3.0.2`	affected	generic	—
`20.4.1.1.5`	affected	generic	—
`20.4.1.0.01`	affected	generic	—
`20.4.1.0.02`	affected	generic	—
`20.3.3.1.7`	affected	generic	—
`20.3.3.1.5`	affected	generic	—
`20.5.1.0.1`	affected	generic	—
`20.3.3.1.10`	affected	generic	—
`20.3.3.0.8`	affected	generic	—
`20.4.2`	affected	generic	—
`20.4.2.0.1`	affected	generic	—
`20.3.4`	affected	semver	—
`20.3.3.0.14`	affected	generic	—
`19.2.4.0.8`	affected	generic	—
`19.2.4.0.9`	affected	generic	—
`20.3.4.0.1`	affected	semver	—
`20.3.2.0.5`	affected	generic	—
`20.6.1`	affected	semver	—
`20.5.1.0.2`	affected	semver	—
`20.3.3.0.17`	affected	generic	—
`20.6.1.1`	affected	generic	—
`20.6.0.18.3`	affected	generic	—
`20.3.2.0.6`	affected	generic	—
`20.6.0.18.4`	affected	generic	—
`20.4.2.0.2`	affected	generic	—
`20.3.3.0.16`	affected	generic	—
`20.3.4.0.5`	affected	generic	—
`20.6.1.0.1`	affected	generic	—
`20.3.4.0.6`	affected	generic	—
`20.6.2`	affected	generic	—
`20.7.1EFT2`	affected	generic	—
`20.3.4.0.9`	affected	generic	—
`20.3.4.0.11`	affected	generic	—
`20.4.2.0.4`	affected	generic	—
`20.3.3.0.18`	affected	generic	—
`20.7.1`	affected	generic	—
`20.6.2.1`	affected	generic	—
`20.3.4.1`	affected	generic	—
`20.5.1.1`	affected	generic	—
`20.4.2.1`	affected	generic	—
`20.4.2.1.1`	affected	generic	—
`20.3.4.1.1`	affected	generic	—
`20.3.813`	affected	generic	—
`20.3.4.0.19`	affected	generic	—
`20.4.2.2.1`	affected	generic	—
`20.5.1.2`	affected	generic	—
`20.3.4.2`	affected	generic	—
`20.3.814`	affected	generic	—
`20.4.2.2`	affected	generic	—
`20.6.2.2`	affected	generic	—
`20.3.4.2.1`	affected	generic	—
`20.7.1.1`	affected	generic	—
`20.3.4.1.2`	affected	generic	—
`20.6.2.2.2`	affected	generic	—
`20.3.4.0.20`	affected	generic	—
`20.6.2.2.3`	affected	generic	—
`20.4.2.2.2`	affected	generic	—
`20.3.5`	affected	semver	—
`20.6.2.0.4`	affected	generic	—
`20.4.2.2.3`	affected	generic	—
`20.3.4.0.24`	affected	generic	—
`20.6.2.2.7`	affected	generic	—
`20.6.3`	affected	generic	—
`20.3.4.2.2`	affected	generic	—
`20.4.2.2.4`	affected	generic	—
`20.7.1.0.2`	affected	generic	—
`20.8.1`	affected	generic	—
`20.3.5.0.8`	affected	generic	—
`20.3.5.0.9`	affected	generic	—
`20.4.2.2.8`	affected	generic	—
`20.3.5.0.7`	affected	generic	—
`20.6.3.0.7`	affected	generic	—
`20.6.3.0.5`	affected	generic	—
`20.6.3.0.10`	affected	generic	—
`20.6.3.0.2`	affected	generic	—
`20.7.2`	affected	generic	—
`20.9.1EFT2`	affected	generic	—
`20.6.3.0.11`	affected	generic	—
`20.6.3.1`	affected	generic	—
`20.6.3.0.14`	affected	generic	—
`20.6.4`	affected	generic	—
`20.9.1`	affected	generic	—
`20.6.3.0.19`	affected	generic	—
`20.6.3.0.18`	affected	generic	—
`20.3.6`	affected	generic	—
`20.9.1.1`	affected	generic	—
`20.6.3.0.23`	affected	generic	—
`20.6.4.0.4`	affected	generic	—
`20.6.3.0.25`	affected	generic	—
`20.6.5`	affected	generic	—
`20.6.3.0.27`	affected	generic	—
`20.9.2`	affected	generic	—
`20.9.2.1`	affected	generic	—
`20.6.3.0.29`	affected	generic	—
`20.6.3.0.31`	affected	generic	—
`20.6.3.0.32`	affected	generic	—
`20.10.1`	affected	semver	—
`20.6.3.0.33`	affected	generic	—
`20.9.2.0.01`	affected	generic	—
`20.9.1_LI_Images`	affected	generic	—
`20.10.1_LI_Images`	affected	generic	—
`20.9.2_LI_Images`	affected	generic	—

Found an issue or want to improve our Enrichment? You can suggest it directly by opening an issue on our dedicated GitHub repository .

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

Apply the vendor‑issued patch or upgrade to the latest version of Cisco Catalyst SD‑WAN Controller and Manager that resolves the peering authentication flaw.
If patching cannot occur immediately, isolate the affected controller from external networks, enforce strict firewall rules to block unsolicited peering traffic, and disable remote NETCONF access until the vulnerability is remediated.
Ensure all peering authentication uses encrypted, certificate‑based credentials and prohibit use of default or weak identities until the fix is deployed.

Generated by OpenCVE AI on April 22, 2026 at 03:42 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is in the KEV database since Feb. 25, 2026.

The EPSS score is 0.33313.

Exploitation active

Automatable yes

Technical Impact total

References

Link	Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa-EHchtZk
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20127

History

Thu, 26 Feb 2026 16:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Cisco sd-wan Vsmart Controller
CPEs		cpe:2.3:a:cisco:catalyst_sd-wan_manager:::::::: cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.12.6:::::::* cpe:2.3:a:cisco:sd-wan_vsmart_controller:::::::: cpe:2.3:a:cisco:sd-wan_vsmart_controller:20.12.6:::::::*
Vendors & Products		Cisco sd-wan Vsmart Controller

Thu, 26 Feb 2026 13:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Cisco Cisco catalyst Sd-wan Manager
Vendors & Products		Cisco Cisco catalyst Sd-wan Manager

Thu, 26 Feb 2026 06:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Wed, 25 Feb 2026 18:30:00 +0000

Type	Values Removed	Values Added
References		https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20127

Wed, 25 Feb 2026 17:15:00 +0000

Type	Values Removed	Values Added
Description		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. This vulnerability exists because the peering authentication mechanism in an affected system is not working properly. An attacker could exploit this vulnerability by sending crafted requests to an affected system. A successful exploit could allow the attacker to log in to an affected Cisco Catalyst SD-WAN Controller as an internal, high-privileged, non-root user account. Using this account, the attacker could access NETCONF, which would then allow the attacker to manipulate network configuration for the SD-WAN fabric.
Title		Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability
Weaknesses		CWE-287
References		https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa-EHchtZk
Metrics		cvssV3_1 `{'score': 10, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'}` kev `{'dateAdded': '2026-02-25T00:00:00+00:00', 'dueDate': '2026-02-27T00:00:00+00:00'}`

Subscriptions

Cisco Catalyst Sd-wan Manager Sd-wan Vsmart Controller

MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2026-02-25T16:14:20.137Z

Updated: 2026-02-26T14:44:06.050Z

Reserved: 2025-10-08T11:59:15.379Z

Link: CVE-2026-20127

Vulnrichment

Updated: 2026-02-25T17:56:39.192Z

NVD

Status : Analyzed

Published: 2026-02-25T17:25:29.477

Modified: 2026-02-26T16:20:02.187

Link: CVE-2026-20127

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-04-22T03:45:06Z

Weaknesses

CWE-287

Impact

Affected Systems

Risk and Exploitability

Tracking

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Exploitation active

Automatable yes

Technical Impact total

Subscriptions

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