CVE-2021-40113

CVE-2021-40113 Multiple vulnerabilities in the web-based management interface of the Cisco Catalyst Passive Optical Network PON Series Switches Optical Network Terminal ONT could allow an unauthenticated, remote attacker to perform the following actions: Log in with a default credential if the...

CVE-2017-3881-Cisco

CVE-2017-3881 Cisco Catalyst RCE Proof-Of-Concept Apr 10, 2017 Do you still have telnet enabled on your Catalyst switches? Think twice, here’s a proof-of-concept remote code execution exploit for Catalyst 2960 switch with latest suggested firmware. Check out the exploit code here. What follows is...

CVE-2026-20245---Cisco-SD-WAN-Privilege-Escalation-Exploit

CVE-2026-20245 - Cisco SD-WAN Privilege Escalation Exploit ⚠️ WARNING This code is ONLY for educational purposes and authorized security testing. 📋 Description CVE-2026-20245 is a privilege escalation vulnerability in the CLI of Cisco Catalyst SD-WAN Controller vSmart, Cisco Catalyst SD-WAN Manage...

CVE-2026-20127

CVE-2026-20127 Overview An exploit for the Cisco Catalyst SD-WAN Controller authentication bypass vulnerability, CVE-2026-20127. This exploit targets the vbondprocchallengeackack handler. It sends a forged CHALLENGEACKACK message msgtype=10 with an attacker-controlled verifystatus=1 byte, directl...

CVE-2026-20131-POC

CVE-2026-20131---Cisco-SD-WAN-Preauth-RCE Cisco SD-WAN Zero-Day CVE-2026-20131 Exploited Since 2023 for Admin Access. This repository contains a working proof-of-concept exploit for CVE-2026-20131, a critical pre-authentication vulnerability in Cisco Catalyst SD-WAN Controller formerly vSmart and...

CISA Adds Exploited Cisco Catalyst SD-WAN Manager Auth Bypass to KEV

The U.S. Cybersecurity and Infrastructure Security Agency CISA on Wednesday added a critical authentication bypass flaw impacting Cisco Catalyst SD-WAN Manager to its Known Exploited Vulnerabilities KEV, following reports of active exploitation. The vulnerability, tracked as CVE-2026-76504 CVSS...

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 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,...

CVE-2026-20127-Exploit-Extension

Executive Summary The CVE-2026-20127 Defensive Companion is a premier, enterprise-grade Browser Extension engineered for proactive threat intelligence and defensive analysis. This tool encapsulates authoritative technical research concerning the authentication bypass vulnerability in the Cisco...

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...

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,...

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...