CVE-2026-20079

CVE-2026-20079 Cisco Secure FMC PoC Python proof of concept for the publicly documented Cisco Secure Firewall Management Center authentication-bypass-to-root-RCE chain in CVE-2026-20079. This is not a new vulnerability or independently developed exploit chain. It is a clean-room implementation of...

CVE-2026-20079

🚨 CVE-2026-20079 "Critical Cisco FMC Zero-Day" Critical Authentication Bypass Leading to Root RCE in Cisco Secure Firewall Management Center 📋 Overview CVE-2026-20079 is a critical vulnerability in the web interface of Cisco Secure Firewall Management Center FMC Software. An unauthenticated remot...

CVE-2026-20131

CVE-2026-20131 — Cisco Secure FMC Remote Code Execution Java Deserialization Severity: Critical CVSS 3.1: 10.0 CWE: CWE-502 — Deserialization of Untrusted Data Affected: Cisco Secure Firewall Management Center FMC Software Advisory: cisco-sa-fmc-rce-NKhnULJh Bug ID: CSCwt14636 Overview A...

CVE-2026-76412

A vulnerability in the remote diagnostics debugger of Cisco Secure FMC Software could allow an authenticated, remote attacker to enable the remote diagnostics debugger service. This vulnerability is due to an error when checking the privilege level of a user who is invoking remote diagnostics. An...

CVE-2026-20340

A vulnerability in Cisco Secure FMC Software could allow an authenticated, remote attacker to execute arbitrary commands at the root privilege level. This vulnerability is due to unsecured deserialization of web-management user-controlled data. An attacker could exploit this vulnerability by...

CVE-2026-20344

A vulnerability in the web-based management interface of Cisco Secure FMC Software could allow an authenticated, remote attacker to perform a SQL injection attack against an affected device. To exploit this vulnerability, the attacker must have a valid account on the device with the role of...

CVE-2026-20342

A vulnerability in a specific file download API of Cisco Secure FMC Software could allow an authenticated, remote attacker to download arbitrary files from an affected system. This vulnerability exists because user input is not being sanitized. An attacker could exploit this vulnerability by...

CVE-2026-20343

A vulnerability in a critical API for Cisco Secure FMC Software could allow an unauthenticated, remote attacker to download sensitive files and use unbounded disk space. This vulnerability exists because a critical API lacks authentication. An attacker could exploit this vulnerability by repeated...

CVE-2026-20341

A vulnerability in the sftunnel inter-device communication protocol of Cisco Secure FMC Software could allow an authenticated, remote attacker to obtain root privileges. This vulnerability is due to unsecured deserialization of untrusted data over the sftunnel management connection. An attacker...

CVE-2026-20342

Cisco Secure Firewall Management Center (FMC) Software contains a low-privileged arbitrary file download vulnerability in a specific file download API. The root cause is unsanitized user input, allowing an authenticated, remote attacker to send a crafted HTTPS request and download arbitrary files...

EUVD-2026-81141

A vulnerability in a specific file download API of Cisco Secure FMC Software could allow an authenticated, remote attacker to download arbitrary files from an affected system. This vulnerability exists because user input is not being sanitized. An attacker could exploit this vulnerability by...

CVE-2026-20342 Cisco Secure Firewall Management Center Software Low Privileged Arbitrary File Download Vulnerability

A vulnerability in a specific file download API of Cisco Secure FMC Software could allow an authenticated, remote attacker to download arbitrary files from an affected system. This vulnerability exists because user input is not being sanitized. An attacker could exploit this vulnerability by...

EUVD-2026-81139

A vulnerability in the sftunnel inter-device communication protocol of Cisco Secure FMC Software and Cisco Secure FTD Software could allow an unauthenticated, adjacent attacker to impersonate the peer device and obtain access at the level of the manager role, which is equivalent to root. This...

CVE-2026-76412

Cisco Secure Firewall Management Center (FMC) Software is affected by an authenticated privilege escalation vulnerability in its remote diagnostics debugger . The root cause is an error in the privilege-level check performed when a user invokes remote diagnostics. An attacker with valid (low-priv...

CVE-2026-76412 Cisco Secure Firewall Management Center Software Authenticated Privilege Escalation to Root Vulnerability

A vulnerability in the remote diagnostics debugger of Cisco Secure FMC Software could allow an authenticated, remote attacker to enable the remote diagnostics debugger service. This vulnerability is due to an error when checking the privilege level of a user who is invoking remote diagnostics. An...

EUVD-2026-81138

A vulnerability in the remote diagnostics debugger of Cisco Secure FMC Software could allow an authenticated, remote attacker to enable the remote diagnostics debugger service. This vulnerability is due to an error when checking the privilege level of a user who is invoking remote diagnostics. An...

EUVD-2026-81129

A vulnerability in the web-based management interface of Cisco Secure FMC Software could allow an authenticated, remote attacker to perform a SQL injection attack against an affected device. To exploit this vulnerability, the attacker must have a valid account on the device with the role of...

CVE-2026-20344 Cisco Secure Firewall Management Center Software SQL Injection Vulnerability

A vulnerability in the web-based management interface of Cisco Secure FMC Software could allow an authenticated, remote attacker to perform a SQL injection attack against an affected device. To exploit this vulnerability, the attacker must have a valid account on the device with the role of...

EUVD-2026-81126

A vulnerability in a critical API for Cisco Secure FMC Software could allow an unauthenticated, remote attacker to download sensitive files and use unbounded disk space. This vulnerability exists because a critical API lacks authentication. An attacker could exploit this vulnerability by repeated...

CVE-2026-20343 Cisco Secure Firewall Management Center Software Information Disclosure and Disk Denial of Service Vulnerability

A vulnerability in a critical API for Cisco Secure FMC Software could allow an unauthenticated, remote attacker to download sensitive files and use unbounded disk space. This vulnerability exists because a critical API lacks authentication. An attacker could exploit this vulnerability by repeated...