CVE-2026-20127---Cisco-SD-WAN-Preauth-RCE

CVE-2026-20127---Cisco-SD-WAN-Preauth-RCE Cisco SD-WAN Zero-Day CVE-2026-20127 Exploited Since 2023 for Admin Access. This repository contains a working proof-of-concept exploit for CVE-2026-20127, a critical pre-authentication vulnerability in Cisco Catalyst SD-WAN Controller formerly vSmart and...

CVE-2026-20245: Improper Encoding or Escaping of Output

A vulnerability in the CLI of 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 authenticated, local attacker to execute arbitrary commands as root by supplyi...

Vulnerabilities found in Cisco Catalyst SD-WAN Controllers and Managers

Cisco has identified vulnerabilities in the Catalyst SD-WAN Controller and Manager products. Cisco has uncovered four vulnerabilities in these products. These vulnerabilities involve XXE injection, privilege escalation, and authentication bypass. The authentication bypass vulnerability resides in...

CVE-2026-20182 Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability

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...

Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability

May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and fixed after the Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability...

CVE-2026-20182: Improper Authentication

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...

Cisco Catalyst SD-WAN Manager and Cisco Catalyst SD-WAN Controller authorization issue vulnerabilities

Cisco Catalyst SD-WAN Manager Cisco SD-WAN vManage and Cisco Catalyst SD-WAN Controller are both products of the American company Cisco. Cisco Catalyst SD-WAN Manager is a highly customizable dashboard that can simplify and automate the deployment, configuration, management, and operation of Cisc...

Exploit for Improper Authentication in Cisco Catalyst_Sd-Wan_Manager

CVE-2026-20127-Cisco SD-WAN Pre-Authentication Remote Code Exe...

📄 Cisco Catalyst SD-WAN Controller Authentication Bypass / Arbitrary WAR Upload

A critical security vulnerability chain was identified involving an authentication bypass through exposed configuration data, followed by an arbitrary file upload via path traversal. Successful exploitation may allow an attacker to deploy a malicious WAR archive into the application server's...

EUVD-2026-8675

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 syste...

CVE-2026-20127

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 syste...

CVE-2026-20127 Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability

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 a...

CVE-2026-20127 Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability

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 a...

VulnCheck KEV: CVE-2026-20127

Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, and Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, contain an authentication bypass vulnerability could allow an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system...

Cisco Catalyst SD-WAN Controller Authentication Bypass

This module exploits an authentication bypass vulnerability CVE-2026-20127 in the Cisco Catalyst SD-WAN Controller vSmart. The vdaemon DTLS control-plane service fails to properly validate the verifystatus byte in CHALLENGEACKACK msgtype=10 messages. The vbondprocchallengeackack handler reads an...

CVE-2026-20127: Improper Authentication

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 a...

Cisco Catalyst SD-WAN Manager and Cisco Catalyst SD-WAN Controller authorization issue vulnerabilities

Cisco Catalyst SD-WAN Manager Cisco SD-WAN vManage and Cisco Catalyst SD-WAN Controller are both products of the American company Cisco. Cisco Catalyst SD-WAN Manager is a highly customizable dashboard that simplifies and automates the deployment, configuration, management, and operation of Cisco...

PT-2026-21954

Name of the Vulnerable Software and Affected Versions Cisco Catalyst SD-WAN Controller affected versions not specified Cisco Catalyst SD-WAN Manager affected versions not specified Cisco Catalyst SD-WAN Validator affected versions not specified Description A flaw in the peering authentication...

Cisco Catalyst SD-WAN Controller and Manager Authentication Bypass Vulnerability

Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, and Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, contain an authentication bypass vulnerability could allow an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system...