CVE-2026-20129

A vulnerability in the API user authentication of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to gain access to an affected system as a user who has the netadmin role. The vulnerability is due to improper authentication for requests that are sent to the API. An attacker could exploit this vulnerability by sending a crafted request to the API of an affected system. A successful exploit could allow the attacker to execute commands with the privileges of the netadmin role. Note: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability. 

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v	Vendor Advisory

Configurations

Configuration 1 (hide)

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:::::::*

History

04 Mar 2026, 21:16

Type	Values Removed	Values Added
CPE		cpe:2.3:a:cisco:catalyst_sd-wan_manager:::::::: cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.12.6:::::::*
First Time		Cisco Cisco catalyst Sd-wan Manager
References	~~() https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v -~~	() https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v - Vendor Advisory

25 Feb 2026, 17:25

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-25 17:25

Updated : 2026-03-04 21:16

NVD link : CVE-2026-20129

Mitre link : CVE-2026-20129

CVE.ORG link : CVE-2026-20129

JSON object : View

Products Affected

cisco

catalyst_sd-wan_manager

CWE

CWE-287

Improper Authentication

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