Cisco Adaptive Security Appliance Software vulnerabilities

CVE-2026-20039 [HIGH] CWE-244 CVE-2026-20039: A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Sof A vulnerability in the VPN web server 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 a denial of service (DoS) condition on an affected device. This vulnerability is due to ineffective memory management of the VPN web

CVE-2026-20101 [HIGH] CWE-330 CVE-2026-20101: A vulnerability in the SAML 2.0 single sign-on (SSO) feature of Cisco Secure Firewall ASA Software a A vulnerability in the SAML 2.0 single sign-on (SSO) feature of Cisco Secure Firewall ASA Software and Secure FTD Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a DoS condition. This vulnerability is due to insufficient error checking when processing SAML messages. An attacker could ex

CVE-2018-0231 [HIGH] CWE-20 CVE-2018-0231: A vulnerability in the Transport Layer Security (TLS) library of Cisco Adaptive Security Appliance ( A vulnerability in the Transport Layer Security (TLS) library of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a reload of the affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validatio

CVE-2017-6608 [HIGH] CWE-399 CVE-2017-6608: A vulnerability in the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) code of Cisco A A vulnerability in the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) code of Cisco ASA Software could allow an unauthenticated, remote attacker to cause a reload of the affected system. The vulnerability is due to improper parsing of crafted SSL or TLS packets. An attacker could exploit this vulnerability by sending a crafted packet to t

CVE-2007-2462 [CRITICAL] CVE-2007-2462: Unspecified vulnerability in Cisco Adaptive Security Appliance (ASA) and PIX 7.2 before 7.2(2)8, whe Unspecified vulnerability in Cisco Adaptive Security Appliance (ASA) and PIX 7.2 before 7.2(2)8, when using Layer 2 Tunneling Protocol (L2TP) or Remote Management Access, allows remote attackers to bypass LDAP authentication and gain privileges via unknown vectors.

CVE-2020-3436 [HIGH] CWE-434 CVE-2020-3436: A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) and Cisco F A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to upload arbitrary-sized files to specific folders on an affected device, which could lead to an unexpected device reload. The vulnerability exists because the affecte

CVE-2018-0240 [HIGH] CWE-399 CVE-2018-0240: Multiple vulnerabilities in the Application Layer Protocol Inspection feature of Cisco Adaptive Secu Multiple vulnerabilities in the Application Layer Protocol Inspection feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerabilities are due to log

CVE-2022-20715 [HIGH] CWE-399 CVE-2022-20715: A vulnerability in the remote access SSL VPN features of Cisco Adaptive Security Appliance (ASA) Sof A vulnerability in the remote access SSL VPN features 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 improper validation of errors that are logged as a r

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-2024-20402 [HIGH] CWE-788 CVE-2024-20402: A vulnerability in the SSL VPN feature for Cisco Adaptive Security Appliance (ASA) Software and Cisc A vulnerability in the SSL VPN feature for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower 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 a logic error in memory manageme

CVE-2024-20494 [HIGH] CWE-1287 CVE-2024-20494: A vulnerability in the TLS cryptography functionality of Cisco Adaptive Security Appliance (ASA) Sof A vulnerability in the TLS cryptography functionality of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to improper data validation

CVE-2025-20182 [HIGH] CWE-787 CVE-2025-20182: A vulnerability in the Internet Key Exchange version 2 (IKEv2) protocol processing of Cisco Adaptive A vulnerability in the Internet Key Exchange version 2 (IKEv2) protocol processing of Cisco Adaptive Security Appliance (ASA) Software, Cisco Firepower Threat Defense (FTD) Software, Cisco IOS Software, and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vu

CVE-2018-0228 [HIGH] CWE-20 CVE-2018-0228: A vulnerability in the ingress flow creation functionality of Cisco Adaptive Security Appliance (ASA A vulnerability in the ingress flow creation functionality of Cisco Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause the CPU to increase upwards of 100% utilization, causing a denial of service (DoS) condition on an affected system. The vulnerability is due to incorrect handling of an internal software lock that

CVE-2019-1694 [HIGH] CWE-20 CVE-2019-1694: A vulnerability in the TCP processing engine of Cisco Adaptive Security Appliance (ASA) Software and A vulnerability in the TCP processing engine of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to the improper handling of TCP traffic. An att

CVE-2019-15256 [HIGH] CWE-399 CVE-2019-15256: A vulnerability in the Internet Key Exchange version 1 (IKEv1) feature of Cisco Adaptive Security Ap A vulnerability in the Internet Key Exchange version 1 (IKEv1) feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper ma

CVE-2018-15388 [HIGH] CWE-400 CVE-2018-15388: A vulnerability in the WebVPN login process of Cisco Adaptive Security Appliance (ASA) Software and A vulnerability in the WebVPN login process of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause increased CPU utilization on an affected device. The vulnerability is due to excessive processing load for existing WebVPN login operations. An attacke

CVE-2018-0230 [HIGH] CWE-400 CVE-2018-0230: A vulnerability in the internal packet-processing functionality of Cisco Firepower Threat Defense (F A vulnerability in the internal packet-processing functionality of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series Security Appliances could allow an unauthenticated, remote attacker to cause an affected device to stop processing traffic, resulting in a denial of service (DoS) condition. The vulnerability is due to the affe

CVE-2020-3191 [HIGH] CWE-20 CVE-2020-3191: A vulnerability in DNS over IPv6 packet processing for Cisco Adaptive Security Appliance (ASA) Softw A vulnerability in DNS over IPv6 packet processing for Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to unexpectedly reload, resulting in a denial of service (DoS) condition. The vulnerability is due to improper length validation of a field

CVE-2019-1713 [HIGH] CWE-352 CVE-2019-1713: A vulnerability in the web-based management interface of Cisco Adaptive Security Appliance (ASA) Sof A vulnerability in the web-based management interface of Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to conduct a cross-site request forgery (CSRF) attack on an affected system. The vulnerability is due to insufficient CSRF protections for the web-based management interface on an affected device. An a

CVE-2020-27124 [HIGH] CWE-457 CVE-2020-27124: A vulnerability in the SSL/TLS handler of Cisco Adaptive Security Appliance (ASA) Software coul A vulnerability in the SSL/TLS handler of Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to cause the affected device to reload unexpectedly, leading to a denial of service (DoS) condition. The vulnerability is due to improper error handling on established SSL/TLS connections. An attacker could exploit