Cisco Firepower Threat Defense Software vulnerabilities

CVE-2026-20022 [MEDIUM] CWE-823 CVE-2026-20022: A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure FTD Soft A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an unauthenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a DoS condition when OSPF canonicalization debug is enabled by using the command debug ip ospf canon. This vulnerability is due to

CVE-2026-20023 [MEDIUM] CWE-787 CVE-2026-20023: A vulnerability in the OSPF protocol of Cisco Secure Firewall Adaptive Security Appliance (ASA) Soft A vulnerability in the OSPF protocol of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, adjacent attacker to corrupt memory on an affected device, resulting in a denial of service (DoS) condition. This vulnerability is due to memory corruption wh

CVE-2026-20069 [MEDIUM] CWE-444 CVE-2026-20069: A vulnerability in the VPN web services component of Cisco Secure Firewall Adaptive Security Applian A vulnerability in the VPN web services component of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct browser-based attacks against users of an affected device. This vulnerability is due to improper validation of HTTP r

CVE-2026-20064 [MEDIUM] CWE-476 CVE-2026-20064: A vulnerability in of Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticat A vulnerability in of Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, local attacker to cause the device to unexpectedly reload, causing a denial of service (DoS) condition. This vulnerability is due to improper validation of user-supplied input. An attacker with a low-privileged account could exploit this vulnerabi

CVE-2026-20024 [MEDIUM] CWE-119 CVE-2026-20024: A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure FTD Soft A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an authenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a DoS condition. To exploit this vulnerability, the attacker must have the OSPF secret key. This vulnerability is due to heap corrupt

CVE-2021-34753 [MEDIUM] CWE-284 CVE-2021-34753: A vulnerability in the payload inspection for Ethernet Industrial Protocol (ENIP) traffic for Cisco A vulnerability in the payload inspection for Ethernet Industrial Protocol (ENIP) traffic for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured rules for ENIP traffic. This vulnerability is due to incomplete processing during deep packet inspection for ENIP packets. An attacker could e

CVE-2024-20339 [HIGH] CWE-476 CVE-2024-20339: A vulnerability in the TLS processing feature of Cisco Firepower Threat Defense (FTD) Software for C A vulnerability in the TLS processing feature of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to an issue that occurs when TLS traffic is processed. An attacker could exploit th

CVE-2024-20351 [HIGH] CWE-400 CVE-2024-20351: A vulnerability in the TCP/IP traffic handling function of the Snort Detection Engine of Cisco Firep A vulnerability in the TCP/IP traffic handling function of the Snort Detection Engine of Cisco Firepower Threat Defense (FTD) Software and Cisco FirePOWER Services could allow an unauthenticated, remote attacker to cause legitimate network traffic to be dropped, resulting in a denial of service (DoS) condition. This vulnerability is due to the improp

CVE-2024-20426 [HIGH] CWE-476 CVE-2024-20426: A vulnerability in the Internet Key Exchange version 2 (IKEv2) protocol for VPN termination of Cisco A vulnerability in the Internet Key Exchange version 2 (IKEv2) protocol for VPN termination of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient i

CVE-2024-20342 [HIGH] CWE-1025 CVE-2024-20342: Multiple Cisco products are affected by a vulnerability in the rate filtering feature of the Snort d Multiple Cisco products are affected by a vulnerability in the rate filtering feature of the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured rate limiting filter. This vulnerability is due to an incorrect connection count comparison. An attacker could exploit this vulnerability by sending traffic th

CVE-2024-20341 [MEDIUM] CWE-80 CVE-2024-20341: A vulnerability in the VPN web client services feature of Cisco Adaptive Security Appliance (ASA) So A vulnerability in the VPN web client services feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a browser that is accessing an affected device. This vulnerability is due to improper valida

CVE-2024-20493 [MEDIUM] CWE-772 CVE-2024-20493: A vulnerability in the login authentication functionality of the Remote Access SSL VPN feature of Ci A vulnerability in the login authentication functionality of the Remote Access SSL VPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to deny further VPN user authentications for several minutes, resulting in a temporary denial of service (

CVE-2024-20485 [MEDIUM] CWE-94 CVE-2024-20485: A vulnerability in the VPN web server of Cisco Adaptive Security Appliance (ASA) Software and Cisco A vulnerability in the VPN web server of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to execute arbitrary code with root-level privileges. Administrator-level privileges are required to exploit this vulnerability. This vulnerability is due to improper v

CVE-2024-20481 [MEDIUM] CWE-772 CVE-2024-20481: A vulnerability in the Remote Access VPN (RAVPN) service of Cisco Adaptive Security Appliance (ASA) A vulnerability in the Remote Access VPN (RAVPN) service of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) of the RAVPN service. This vulnerability is due to resource exhaustion. An attacker could exploit this vulnera

CVE-2024-20331 [MEDIUM] CWE-330 CVE-2024-20331: A vulnerability in the session authentication functionality of the Remote Access SSL VPN feature of A vulnerability in the session authentication functionality of the Remote Access SSL VPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to prevent users from authenticating. This vulnerability is due to insufficient entropy in the authentic

CVE-2024-20358 [MEDIUM] CWE-78 CVE-2024-20358: A vulnerability in the Cisco Adaptive Security Appliance (ASA) restore functionality that is availab A vulnerability in the Cisco Adaptive Security Appliance (ASA) restore functionality that is available in Cisco ASA Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system with root-level privileges. Administrator-level privileges are requ