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...

Exploit for CVE-2026-76504

Cisco Catalyst SD-WAN Manager — CVE-2026-76504 Unauthenticate...

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,...

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,...

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...

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|...

PT-2026-103270

Name of the Vulnerable Software and Affected Versions Cisco Catalyst SD-WAN Manager versions 20.9 through 20.9.10.0 Cisco Catalyst SD-WAN Manager versions 20.12 through 20.12.8.1 Cisco Catalyst SD-WAN Manager versions 20.15 through 20.15.6.0 Cisco Catalyst SD-WAN Manager versions 20.18 through...

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...

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-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,...

[SECURITY] Fedora 44 Update: perl-Catalyst-Plugin-Static-Simple-0.38-2.fc44

The Static::Simple plugin is designed to make serving static content in your application during development quick and easy, without requiring a single line of code from you...

[SECURITY] Fedora 43 Update: perl-Catalyst-Plugin-Static-Simple-0.38-2.fc43

The Static::Simple plugin is designed to make serving static content in your application during development quick and easy, without requiring a single line of code from you...

[SECURITY] Fedora 45 Update: perl-Catalyst-Plugin-Static-Simple-0.38-2.fc45

The Static::Simple plugin is designed to make serving static content in your application during development quick and easy, without requiring a single line of code from you...