ID

VAR-202605-3704

CVE

CVE-2026-20182

TITLE

Cisco Systems Cisco Catalyst SD-WAN Manager Vulnerabilities related to authentication in multiple products, such as

DESCRIPTION

May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and fixed after the was disclosed in February 2026. This new advisory is for a new vulnerability in the control connection handshaking. The section of this advisory includes Show Control Connections guidance to help with system checks.  A vulnerability in the peering authentication in Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, 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 the 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. A successful attack would allow the attacker to gain administrator privileges. Cisco Catalyst SD-WAN Controller He has high authority within the company. root This will allow you to log in as a non-user account. All information handled by the software may be rewritten. Furthermore, the software may stop working completely. Furthermore, attacks exploiting this vulnerability may affect other software as well

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

PATCH

EXTERNAL IDS

REFERENCES

SOURCES

LAST UPDATE DATE

2026-06-19T23:37:40.970000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE