CVE Vulnerability Catalog

Translated CVE descriptions from NVD NIST - in English

Browse vulnerabilities by package

CISA KEV catalog updated: (v2026.11.06)

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CVE-2026-20023
Medium

A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA and FTD Software allows an unauthenticated adjacent attacker to corrupt memory on an affected device, resulting in a DoS condition. This is due to memory corruption when parsing OSPF protocol packets.

CVE-2026-20022
Medium

A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA and FTD Software allows an unauthenticated adjacent attacker to cause an unexpected device reload, resulting in a DoS condition when OSPF canonicalization debug is enabled. This is due to insufficient input validation when processing OSPF LSU packets.

CVE-2026-20021
Medium

A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, adjacent attacker to exhaust memory on an affected device, resulting in a denial of service (DoS) condition. This is due to improper input validation when parsing OSPF packets. Crafted packets can exhaust memory and cause service disruption.

CVE-2026-20020
Medium

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. If OSPF authentication is enabled, the attacker must know the secret key. This is due to insufficient input validation when processing OSPF update packets. Crafted packets can cause a buffer overflow and device reload.

CVE-2026-20016
Medium

Podatność w funkcji CLI oprogramowania Cisco FXOS dla Cisco Secure Firewall ASA i Secure FTD może pozwolić uwierzytelnionemu, lokalnemu atakującemu na wykonywanie dowolnych poleceń w systemie operacyjnym z uprawnieniami root. Problem wynika z niewystarczającej walidacji danych wejściowych dostarczanych przez użytkownika.

CVE-2026-20106
Medium

A vulnerability in the Remote Access SSL VPN, HTTP management, and MUS functionality of Cisco Secure Firewall ASA and FTD Software could allow an unauthenticated, remote attacker to exhaust device memory, resulting in a denial of service (DoS) condition requiring a manual reboot. This is due to trusting user input without validation. An attacker could exploit this by sending crafted packets to the Remote Access SSL VPN server.

CVE-2026-20102
Medium

A vulnerability in the SAML 2.0 single sign-on (SSO) feature of Cisco Secure Firewall ASA and FTD Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against the SAML feature and access sensitive browser-based information. This is due to insufficient input validation of HTTP parameters. Exploitation requires persuading a user to access a malicious link.

CVE-2026-20073
Medium

A vulnerability in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to send traffic that should be denied through an affected device. The issue is due to improper error handling when a device joining a cluster runs out of memory while replicating access control rules.

CVE-2026-20070
Medium

A vulnerability in the VPN web services component of Cisco Secure Firewall ASA and FTD Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a browser accessing an affected device. This is due to improper validation of user-supplied input in HTTP requests. Exploitation could allow arbitrary HTML or script execution in the context of the VPN web server.

CVE-2026-20069
Medium

Podatność w komponencie usług webowych VPN oprogramowania Cisco Secure Firewall Adaptive Security Appliance (ASA) oraz Cisco Secure Firewall Threat Defense (FTD) może umożliwić nieautoryzowanemu, zdalnemu atakującemu przeprowadzenie ataków opartych na przeglądarkach przeciwko użytkownikom dotkniętego urządzenia. Problem wynika z niewłaściwej walidacji żądań HTTP.

CVE-2026-20068
Medium

Vulnerability in the Snort 3 detection engine in multiple Cisco products allows an unauthenticated, remote attacker to cause the engine to restart, interrupting packet inspection. It is due to incomplete error checking when parsing RPC data.

CVE-2026-20067
Medium

Multiple Cisco products are affected by a vulnerability in the Snort 3 detection engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection. This vulnerability is due to incomplete error checking when parsing the Multicast DNS fields of the HTTP header. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a DoS condition when the Snort 3 Detection Engine unexpectedly restarts.

CVE-2026-20066
Medium

Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection. This vulnerability is due to an error in the JSTokenizer normalization logic when the HTTP inspection normalizes JavaScript. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection that is parsed by Snort 3. A successful exploit could allow the attacker to cause a DoS condition when the Snort 3 Detection Engine restarts unexpectedly. JSTokenizer is not enabled by default.

CVE-2026-20065
Medium

A vulnerability in the Snort 3 Detection Engine of multiple Cisco products allows an unauthenticated, remote attacker to cause the engine to restart, interrupting packet inspection. The issue is due to an error in the binder module initialization logic. Exploitation involves sending certain packets through an established connection.

CVE-2026-20058
Medium

Multiple Cisco products are affected by vulnerabilities in the Snort 3 VBA feature that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash. These vulnerabilities are due to improper error checking when decompressing VBA data. An attacker could exploit these vulnerabilities by sending crafted VBA data to the Snort 3 Detection Engine on the targeted device. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to unexpectedly restart, causing a DoS condition.

CVE-2026-20057
Medium

A vulnerability in the VBA feature of the Snort 3 engine in multiple Cisco products allows an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash. This is due to lack of proper error checking when decompressing VBA data. A successful exploit could cause the engine to unexpectedly restart, leading to a DoS condition.

CVE-2026-20054
Medium

A vulnerability in the VBA feature of the Snort 3 engine in multiple Cisco products allows an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash. This is due to improper error checking when decompressing VBA data. A successful exploit could cause the engine to enter an infinite loop, leading to a DoS condition.

CVE-2026-20053
Medium

A vulnerability in the VBA feature of the Snort 3 engine in multiple Cisco products allows an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash. This is due to improper range checking when decompressing user-controlled VBA data. A successful exploit could cause an overflow of heap data, leading to a DoS condition.

CVE-2026-20052
Medium

A vulnerability in the memory management handling for the Snort 3 Detection Engine of Cisco Secure Firewall Threat Defense (FTD) Software allows an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart. This is due to a logic error in memory management during SSL packet inspection. A successful exploit could cause a DoS condition.

CVE-2026-20050
Medium

A vulnerability in the Do Not Decrypt exclusion feature of the SSL decryption feature of 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. The issue is due to improper memory management during inspection of TLS 1.2 encrypted traffic.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS