Cisco Warns of Attackers Exploiting Critical Authentication Bypass in SD-WAN Manager

Attackers are exploiting a new critical zero-day flaw in Cisco Catalyst SD-WAN Manager, the system companies use to manage their Cisco SD-WAN networks, Cisco said in an advisory on September 30. The flaw, CVE-2026-76504 , could allow a remote attacker with no login access to use the Manager's API...

Critical Cisco Catalyst SD-WAN Manager API authentication bypass exploited in the wild (CVE-2026-76504)

Overview On September 30, 2026, Cisco published a security advisory for CVE-2026-76504, a critical API authentication bypass vulnerability affecting Cisco Catalyst SD-WAN Manager. The vulnerability has a CVSSv3.1 score of 9.8 and results from improper handling of URL encoding CWE-177. An...

Kwetsbaarheid verholpen in Cisco Catalyst SD-WAN Manager

Cisco has identified a vulnerability in the Cisco Catalyst SD-WAN Manager. This vulnerability resides in an API of the Cisco Catalyst SD-WAN Manager. Due to improper handling of URI encoding, unauthorized malicious actors can circumvent authentication mechanisms. This allows malicious...

CVE-2026-76504

A vulnerability in the API session-based authentication management of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to access an affected system with privileges of the admin user. This vulnerability is due to improper handling of URI encoding in an HTTP request,...

CVE-2026-76504 Cisco Catalyst SD-WAN Manager System Account Authorization Bypass Vulnerability

A vulnerability in the API session-based authentication management of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to access an affected system with privileges of the admin user. This vulnerability is due to improper handling of URI encoding in an HTTP request,...

CVE-2026-76504

A critical authentication bypass vulnerability exists in the Cisco Catalyst SD-WAN Manager API session-based authentication management. The root cause is improper handling of URI encoding (CWE-177) in HTTP requests, allowing an unauthenticated, remote attacker to bypass authentication rules and g...

EUVD-2026-89950

A vulnerability in the API session-based authentication management of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to access an affected system with privileges of the admin user. This vulnerability is due to improper handling of URI encoding in an HTTP request,...

CVE-2026-76504

creationtimestamp| type| source ---|---|--- 2026-09-30 11:42:55+00:00| seen| https://www.acn.gov.it/portale/w/cisco-rilevato-sfruttamento-in-rete-di-una-vulnerabilita-in-catalyst-sd-wan-manager 2026-09-30 12:46:40+00:00| seen|...

CVE-2026-20245

🚨 CVE-2026-20245 - Cisco Catalyst SD-WAN Manager Escalada de Privilegios Escalada de Privilegios Autenticada mediante Carga de Archivos Manipulados Una vulnerabilidad que afecta a Cisco Catalyst SD-WAN Manager que permite a atacantes autenticados con privilegios administrativos ejecutar comandos...

CVE-2026-20224---XXE-Injection-en-Cisco-Catalyst-SD-WAN-Manager

CVE-2026-20224 - Cisco Catalyst SD-WAN Manager XXE Injection ⚠️ DISCLAIMER ESTA HERRAMIENTA ES EXCLUSIVAMENTE PARA FINES EDUCATIVOS Y DE INVESTIGACIÓN Este exploit está destinado exclusivamente para operaciones de equipo rojo autorizadas, pruebas de penetración e investigación de seguridad en...

CVE-2026-20294: Cleartext Transmission of Sensitive Information

A vulnerability in the web-based management interface of Cisco Catalyst SD-WAN Manager could allow an authenticated, remote attacker to view sensitive information in clear text on an affected system. This vulnerability is due to insufficient access control enforcement for specific template types...

Cisco Releases Security Updates for Actively Exploited SD-WAN Manager Flaw

Cisco has released security updates for a medium-severity security flaw in Catalyst SD-WAN Manager that has come under active exploitation in the wild. The vulnerability, tracked as CVE-2026-20262 , carries a CVSS score of 6.5 out of 10.0. "A vulnerability in the web UI of Cisco Catalyst SD-WAN...

CVE-2026-20262: Improper Limitation of a Pathname to a Restricted Directory

A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker to create a file or overwrite any file on the filesystem of an affected system. This vulnerability exists because the affected software does not properly validate...

Exploit for Improper Encoding or Escaping of Output in Cisco Catalyst_Sd-Wan_Manager

🚨 CVE-2026-20245 - Cisco Catalyst SD-WAN Manager Privilege Esc...

Cisco Catalyst SD-WAN Manager Improper Encoding or Escaping of Output Vulnerability

Cisco Catalyst SD-WAN Manager formerly SD-WAN vManage contains an improper encoding or escaping of output vulnerability. This vulnerability could allow an authenticated, local attacker to execute arbitrary commands as root by supplying a crafted file to the affected system...

The vulnerability of the command-line interface of the Cisco Catalyst SD-WAN Manager allows a attacker to execute arbitrary code and elevate their privileges to root level.

The vulnerability of the command-line interface of the Cisco Catalyst SD-WAN Manager is related to incorrect encoding or filtering of output data. Exploiting this vulnerability allows an attacker to execute arbitrary code and elevate their privileges to the root level...

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...

EUVD-2026-30327

A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker with read-only permissions to elevate their privileges from low to high and perform actions as a high-privileged user. This vulnerability exists because sensitive...

PT-2026-40960

Name of the Vulnerable Software and Affected Versions Cisco Catalyst SD-WAN Manager versions prior to 26.0.1 Description A flaw in the web UI of Cisco Catalyst SD-WAN Manager allows an authenticated remote attacker with read-only permissions to elevate their privileges to a high-privileged level...

CVE-2026-20210: Logging of Excessive Data

A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker with read-only permissions to modify configurations and perform unauthorized actions on an affected system. This vulnerability exists because of a failure to reda...