Cisco Secure Firewall Management Center Software sftunnel Authentication Bypass (cisco-sa-fmcftd-sftun-multivulns-WGVHOrN3)

According to its self-reported version, Cisco Secure Firewall Management Center FMC is affected by multiple vulnerabilities. - A denial of service DoS vulnerability exists in the sftunnel functionality due to improper memory management. An unauthenticated, remote attacker can exploit this issue,...

Cisco Secure Firewall Threat Defense Software sftunnel Authentication Bypass (cisco-sa-fmcftd-sftun-multivulns-WGVHOrN3)

According to its self-reported version, Cisco Secure Firewall Threat Defense FTD Software is affected by multiple vulnerabilities. - A denial of service DoS vulnerability exists in the sftunnel functionality due to improper memory management. An unauthenticated, remote attacker can exploit this...

CVE-2026-20323

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-2026-20295

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...

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-2026-20324

A vulnerability in the sftunnel inter-device communication protocol of Cisco Secure Firewall Management Center FMC Software could allow an authenticated, remote attacker to execute arbitrary commands as root. This vulnerability exists because a registered sftunnel peer has incorrect permissions t...

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...

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-2026-20323 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-2026-20323

CVE-2026-20323 affects the sftunnel inter-device communication protocol in Cisco Secure FMC Software and Cisco Secure FTD Software . The root cause is improper management of the TLS certificate used for the sftunnel management connection. An unauthenticated, adjacent attacker with high attack com...

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...

CVE-2026-20295 Cisco Secure Firewall Management Center and Secure Firewall Threat Defense Software sftunnel Memory Exhaustion Denial of Service Vulnerability

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...

CVE-2026-20295 Cisco Secure Firewall Management Center and Secure Firewall Threat Defense Software sftunnel Memory Exhaustion Denial of Service Vulnerability

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...

CVE-2026-20295

CVE-2026-20295 affects the sftunnel inter-device communication protocol in Cisco Secure Firewall Management Center (FMC) and Cisco Secure Firewall Threat Defense (FTD) Software. The root cause is improper management of memory resources during sftunnel TLS connection setup , allowing an unauthenti...

EUVD-2026-81110

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-2026-20341 Cisco Secure Firewall Management Center Software sftunnel Deserialization Root Command Execution Vulnerability

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-2026-20341 Cisco Secure Firewall Management Center Software sftunnel Deserialization Root Command Execution Vulnerability

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-2026-20341

CVE-2026-20341 is a critical deserialization flaw (CVSS 9.1) in the sftunnel inter-device communication protocol of Cisco Secure FMC Software . The root cause is unsecured deserialization of untrusted data over the sftunnel management connection. An authenticated remote attacker holding valid adm...

CVE-2026-20324

CVE-2026-20324 is a CRITICAL (CVSS 9.9) vulnerability in the sftunnel inter-device communication protocol of Cisco Secure Firewall Management Center (FMC) Software . The root cause is that a registered sftunnel peer holds incorrect permissions, allowing it to write an arbitrary file to any locati...

EUVD-2026-81103

A vulnerability in the sftunnel inter-device communication protocol of Cisco Secure Firewall Management Center FMC Software could allow an authenticated, remote attacker to execute arbitrary commands as root. This vulnerability exists because a registered sftunnel peer has incorrect permissions t...