CVE-2026-20323 Cisco Secure Firewall Management Center and Secure Firewall Threat Defense Software sftunnel Unauthorized Authentication Bypass Vulnerability

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...

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...

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-2026-81129

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...

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...

EUVD-2026-81120

A vulnerability in Cisco Adaptive Security Device Manager ASDM single sign-on SSO handler for Cisco Secure FMC Software could allow an unauthenticated, remote attacker to log in as the Cisco ASDM administrator user. This vulnerability is due to improper management of the Cisco ASDM SSO token. An...

CVE-2026-76413 Cisco Secure Firewall Management Center Software Single Sign-On Token Forgery of Administrator Account Vulnerability

A vulnerability in Cisco Adaptive Security Device Manager ASDM single sign-on SSO handler for Cisco Secure FMC Software could allow an unauthenticated, remote attacker to log in as the Cisco ASDM administrator user. This vulnerability is due to improper management of the Cisco ASDM SSO token. An...

CVE-2026-76413 Cisco Secure Firewall Management Center Software Single Sign-On Token Forgery of Administrator Account Vulnerability

A vulnerability in Cisco Adaptive Security Device Manager ASDM single sign-on SSO handler for Cisco Secure FMC Software could allow an unauthenticated, remote attacker to log in as the Cisco ASDM administrator user. This vulnerability is due to improper management of the Cisco ASDM SSO token. An...

CVE-2026-76413

A vulnerability in the Cisco ASDM single sign-on (SSO) handler for Cisco Secure FMC Software allows an unauthenticated, remote attacker to forge a session token and log in as the ASDM administrator. The root cause is improper management of the SSO token . By repeating the attack, an attacker can ...

CVE-2026-20340 Cisco Secure Firewall Management Center Software Deserialization Arbitrary Root Command Execution Vulnerability

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-2026-20340 Cisco Secure Firewall Management Center Software Deserialization Arbitrary Root Command Execution Vulnerability

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...

EUVD-2026-81116

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-2026-20340

Cisco Secure Firewall Management Center (FMC) Software is affected by an unsecured deserialization vulnerability in web-management user-controlled data. An authenticated remote attacker with at least the Security Analyst (read-only) role can send a crafted HTTP payload to the device, save it, and...

EUVD-2026-81113

A vulnerability in the sftunnel inter-device communication protocol of Cisco Secure FMC Software and Cisco Secure FTD Software could allow an unauthenticated, remote attacker to exhaust the available memory of an affected device. This vulnerability is due to improper management of memory resource...