Cisco Secure Firewall Authentication Bypass

The vulnerabilities of the Cisco Secure Firewall Management Center formerly known as Cisco Firepower Management Center and the Cisco Secure Firewall Threat Defense FTD software are related to errors in the certificate validation process. Exploiting these vulnerabilities can allow attackers to...

Cisco Secure Firewall IKEv2 DoS

The vulnerability of the IKEv2 protocol implemented by Cisco Secure Firewall Threat Defense FTD and Cisco Secure Firewall Adaptive Security Appliance ASA is related to incorrect data type conversion. Exploiting this vulnerability can allow a malicious actor to cause service interruptions remotely...

Cisco Secure Firewall Threat Defense Speed-Limiting Mechanism DoS

The vulnerability of the syslog 419002 mechanism used by Cisco Secure Firewall Threat Defense FTD and Cisco Secure Firewall Adaptive Security Appliance ASA relates to improper memory release. Exploiting this vulnerability could allow a malicious actor to cause a service failure...

Cisco Secure Firewall DoS

The vulnerability of the EIGRP protocol implementation in Cisco Secure Firewall Threat Defense FTD and Cisco Secure Firewall Adaptive Security Appliance ASA is related to improper memory release. Exploiting this vulnerability can allow a malicious actor to cause service interruptions...

Cisco Secure Firewall Threat Defense Software TLS 1.3 DoS (cisco-sa-ftd-tls1-3-dos-dLxwFWgF)

According to its self-reported version, Cisco Secure Firewall Threat Defense FTD Software is affected by a denial of service vulnerability. A flaw exists within the TLS 1.3 implementation due to improper buffer management. An unauthenticated, remote attacker can exploit this issue, via a crafted...

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-2026-20335

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software, Cisco Secure Firewall Threat Defense Software and Cisco Secure Firewall Management Center Software engineering team has conducted a comprehensive internal securi...

CVE-2026-20290

A vulnerability in SSL/TLS certificate parsing in the Snort 2 Detection Engine of Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause the Snort 2 Detection Engine to restart. This vulnerability is due to incomplete validation of the SSL...

CVE-2026-20248

A vulnerability in the DNS over TCP implementation of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause the TCP DNS response handler to unexpectedly restart, causing the...

CVE-2026-20249

A vulnerability in the certification authentication feature of Internet Key Exchange version 2 IKEv2 for Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause an affected device...

CVE-2026-20250

A vulnerability in Datagram TLS DTLS message handling of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software for Cisco Secure Firewall 3100 Series and 4200 Series devices could allow an unauthenticated, remote attacker to cause a...

CVE-2026-20121

A vulnerability in the access control list ACL Object Group Search OGS implementation of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to bypass configured access controls. This...

CVE-2026-20120

A vulnerability in the access control list ACL Object Group Search OGS implementation of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to bypass configured access controls. This...

CVE-2026-20135

A vulnerability in the TLS 1.3 implementation in Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service DoS condition. This vulnerability is due to improper buffer...

CVE-2026-20154

A vulnerability in the system rate-limiting process for syslog message 419002 of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause high CPU utilization on an affected device...

CVE-2026-20222

A vulnerability in the EIGRP implementation in Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, adjacent attacker to cause the device to reload unexpectedly, resulting in a denial of service DoS...

CVE-2026-20121 CIsco FTD Bypass Access List

A vulnerability in the access control list ACL Object Group Search OGS implementation of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to bypass configured access controls. This...

EUVD-2026-81017

A vulnerability in the access control list ACL Object Group Search OGS implementation of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to bypass configured access controls. This...

CVE-2026-20121 CIsco FTD Bypass Access List

A vulnerability in the access control list ACL Object Group Search OGS implementation of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to bypass configured access controls. This...