CVE-2025-20217 Cisco Firepower Threat Defense Intrusion Detection Denial of Service Vulnerability

A vulnerability in the packet inspection functionality of the Snort 3 Detection Engine 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. This vulnerability is due to incorrect...

PT-2025-33317 · Cisco +1 · Cisco Secure Firewall Threat Defense +1

Name of the Vulnerable Software and Affected Versions: Cisco Secure Firewall Threat Defense FTD Software Snort 3 Detection Engine affected versions not specified Description: A vulnerability in the packet inspection functionality of the Snort 3 Detection Engine could allow a remote, unauthenticat...

Cisco Meraki 14 / 15 / 16 < 16.16 DoS (cisco-sa-snort-dos-9D3hJLuj)

The version of the remote Cisco Meraki device is version 14, 15, or 16 prior to 16.16. It is, therefore, potentially affected by a denial of service vulnerability as referenced in the cisco-sa-snort-dos-9D3hJLuj advisory: - A vulnerability in the Modbus preprocessor of the Snort detection engine...

CVE-2024-20342

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...

CVE-2023-20071

Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. This vulnerability is due to a flaw in the FTP module of the Snort detection engine. An attacker coul...

CVE-2022-20922

Multiple vulnerabilities in the Server Message Block Version 2 SMB2 processor of the Snort detection engine on multiple Cisco products could allow an unauthenticated, remote attacker to bypass the configured policies or cause a denial of service DoS condition on an affected device. These...

CVE-2022-20943

Multiple vulnerabilities in the Server Message Block Version 2 SMB2 processor of the Snort detection engine on multiple Cisco products could allow an unauthenticated, remote attacker to bypass the configured policies or cause a denial of service DoS condition on an affected device. These...

CVE-2021-1494

Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect handling of specific HTTP header parameters. An attacker could exploit this...

CVE-2024-20330

A vulnerability in the Snort 2 and Snort 3 TCP and UDP detection engine of Cisco Firepower Threat Defense FTD Software for Cisco Firepower 2100 Series Appliances could allow an unauthenticated, remote attacker to cause memory corruption, which could cause the Snort detection engine to restart...

UBUNTU-CVE-2021-1494

Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect handling of specific HTTP header parameters. An attacker could exploit this...

CVE-2022-20685

A vulnerability in the Modbus preprocessor of the Snort detection engine could allow an unauthenticated, remote attacker to cause a denial of service DoS condition on an affected device. This vulnerability is due to an integer overflow while processing Modbus traffic. An attacker could exploit th...

CVE-2022-20685 Multiple Cisco Products Snort Modbus Denial of Service Vulnerability

A vulnerability in the Modbus preprocessor of the Snort detection engine could allow an unauthenticated, remote attacker to cause a denial of service DoS condition on an affected device. This vulnerability is due to an integer overflow while processing Modbus traffic. An attacker could exploit th...

Cisco Firepower Threat Defense Software Database with Snort Detection Engine Security Policy Bypass and DoS Issue (cisco-sa-ftd-vdb-snort-djj4cnbR)

According to its self-reported version, Cisco Firepower Threat Defense Software Database with Snort Detection Engine Security Policy Bypass and Denial of Service Issue is affected by a vulnerability. Please see the included Cisco BIDs and Cisco Security Advisory for more information. TRUSTED...

CVE-2024-20407

A vulnerability in the interaction between the TCP Intercept feature and the Snort 3 detection engine on Cisco Firepower Threat Defense FTD Software could allow an unauthenticated, remote attacker to bypass configured policies on an affected system. Devices that are configured with Snort 2 are no...

CVE-2024-20342

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...

CVE-2024-20351

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...

CVE-2024-20342

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...

CVE-2024-20330

A vulnerability in the Snort 2 and Snort 3 TCP and UDP detection engine of Cisco Firepower Threat Defense FTD Software for Cisco Firepower 2100 Series Appliances could allow an unauthenticated, remote attacker to cause memory corruption, which could cause the Snort detection engine to restart...

CVE-2024-20342

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...

CVE-2024-20342 Cisco Firepower Threat Defense Software Rate Filter Bypass Vulnerability

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...