The vulnerability of the application software interface of the Cisco Catalyst SD-WAN Manager allows a perpetrator to bypass existing security mechanisms and gain unauthorized access to protected information.

The vulnerability of the application software interface of the Cisco Catalyst SD-WAN Manager is related to improper handling of data with encoded URLs. Exploiting this vulnerability allows an attacker to bypass existing security mechanisms and gain unauthorized access to protected information by...

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

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...

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,...

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 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,...

Cisco Catalyst SD-WAN Manager API Authentication 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,...

CISA Adds One Known Exploited Vulnerability to Catalog  

CISA has added one new vulnerability to its Known Exploited Vulnerabilities KEV Catalog, based on evidence of active exploitation. CVE-2026-76504link is external Cisco Catalyst SD-WAN Manager Hex Encoding Vulnerability This type of vulnerability is a frequent attack vector for malicious cyber...

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-2026-20127-Exploit-Extension

Resumen Ejecutivo El Defensor Complementario de CVE-2026-20127 es una extensión de navegador premium de nivel empresarial diseñada para inteligencia de amenazas proactiva y análisis defensivo. Esta herramienta encapsula investigación técnica autorizada sobre la vulnerabilidad de omisión de...

Citrix SD-WAN and NetScaler SD-WAN - SQL Injection

Citrix SD-WAN 10.2.x before 10.2.3 and NetScaler SD-WAN 10.0.x before 10.0.8 contain an SQL injection vulnerability. An unauthenticated attacker can exploit improper validation of input in specific components, which could allow for execution of arbitrary SQL queries against the backend database...

CVE-2026-76504: Improper Handling of URL Encoding (Hex Encoding)

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,...

VulnCheck KEV: CVE-2026-76504

Cisco Catalyst SD-WAN Manager contains a hex encoding vulnerability that could allow an unauthenticated, remote attacker to access an affected system with privileges of the admin user due to improper handling of URI encoding in an HTTP request...

AlmaLinux 9.2 [TuxCare] Security Update: avahi / avahi-autoipd / avahi-compat-howl / avahi-compat-howl-devel / etc (ALMALINUX9.2:CLSA-2026:1786360814)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1786360814 advisory. - Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In versions up to and includin...

PT-2026-103270

Name of the Vulnerable Software and Affected Versions Cisco Catalyst SD-WAN Manager versions prior to 20.9.10.1 Cisco Catalyst SD-WAN Manager versions prior to 20.12.8.2 Cisco Catalyst SD-WAN Manager versions prior to 20.15.6.1 Cisco Catalyst SD-WAN Manager versions prior to 20.18.4.1 Cisco...

Cisco Catalyst SD-WAN Manager Hex Encoding Vulnerability

Cisco Catalyst SD-WAN Manager contains a hex encoding vulnerability that could allow an unauthenticated, remote attacker to access an affected system with privileges of the admin user due to improper handling of URI encoding in an HTTP request...

CVE-2022-20818

CVE-2022-20818: Escalada de privilegios local mediante lectura parcial de archivos en Cisco SD-WAN La función “config - load” del shell SSH de Viptela utiliza “wget” para obtener archivos “command” remotos a través de FTP. Al alojar un servidor FTP malicioso y reemplazar los archivos locales...