Cisco Secure Firewall Threat Defense Software

22 known vulnerabilities in Cisco Secure Firewall Threat Defense Software, 5 critical, 3 actively exploited, with patch priority, exploit likelihood and the…

Recently exploited

  • CVE-2026-20349 CVSS 8.6 high · actively exploited Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection Vulnerability
  • CVE-2025-20362 CVSS 8.6 high · actively exploited Cisco Secure Firewall Adaptive Security (ASA) Appliance and Secure Firewall Threat Defense (FTD) Missing Authorization Vulnerability
  • CVE-2025-20333 CVSS 9.9 critical · actively exploited Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Buffer Overflow Vulnerability

Latest vulnerabilities

  • CVE-2026-20336 CVSS 8.8 high As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software…
  • CVE-2026-20335 CVSS 8.1 high As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software…
  • CVE-2026-20334 CVSS 8.4 high As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software…
  • CVE-2026-20333 CVSS 8.8 high As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software…
  • CVE-2026-20332 CVSS 9.9 critical As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software…
  • CVE-2026-20323 CVSS 8.3 high A vulnerability in the sftunnel inter-device communication protocol of Cisco Secure FMC Software and Cisco Secure FTD Software could allow…
  • CVE-2026-20295 CVSS 8.6 high A vulnerability in the sftunnel inter-device communication protocol of Cisco Secure FMC Software and Cisco Secure FTD Software could allow…
  • CVE-2026-20290 CVSS 5.8 medium A vulnerability in SSL/TLS certificate parsing in the Snort 2 Detection Engine of Cisco Secure Firewall Threat Defense (FTD) Software…
  • CVE-2026-20250 CVSS 8.6 high A vulnerability in Datagram TLS (DTLS) message handling of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco…
  • CVE-2026-20249 CVSS 8.6 high A vulnerability in the certification authentication feature of Internet Key Exchange version 2 (IKEv2) for Cisco Secure Firewall…
  • CVE-2026-20248 CVSS 6.8 medium A vulnerability in the DNS over TCP implementation of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure…
  • CVE-2026-20222 CVSS 7.4 high A vulnerability in the EIGRP implementation in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall…
  • CVE-2026-20154 CVSS 8.6 high A vulnerability in the system rate-limiting process for syslog message 419002 of Cisco Secure Firewall Adaptive Security Appliance (ASA)…
  • CVE-2026-20135 CVSS 8.6 high A vulnerability in the TLS 1.3 implementation in Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated…
  • CVE-2026-20121 CVSS 5.3 medium A vulnerability in the access control list (ACL) Object Group Search (OGS) implementation of Cisco Secure Firewall Adaptive Security…
  • CVE-2026-20120 CVSS 5.8 medium A vulnerability in the access control list (ACL) Object Group Search (OGS) implementation of Cisco Secure Firewall Adaptive Security…
  • CVE-2026-20330 CVSS 9.9 critical As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software…
  • CVE-2026-20329 CVSS 9.9 critical As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software…
  • CVE-2026-20331 CVSS 9.6 critical As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software…
  • CVE-2026-20349 CVSS 8.6 high · actively exploited Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection Vulnerability
  • CVE-2025-20362 CVSS 8.6 high · actively exploited Cisco Secure Firewall Adaptive Security (ASA) Appliance and Secure Firewall Threat Defense (FTD) Missing Authorization Vulnerability
  • CVE-2025-20333 CVSS 9.9 critical · actively exploited Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Buffer Overflow Vulnerability