CVE-2026-20005

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 parsing of the...

Multiple Cisco Products Snort 3 Denial of Service Vulnerabilities

Multiple Cisco products are affected by vulnerabilities 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. For more information about these vulnerabilities, see t...

Cisco Secure Firewall Threat Defense Software Snort 3 SSL Memory Management Denial of Service Vulnerability

A vulnerability in the memory management handling for the Snort 3 Detection Engine of Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart. This vulnerability is due to a logic error in memory management...

Multiple Cisco Products Snort 3 Visual Basic for Applications Denial of Service Vulnerabilities

Multiple Cisco products are affected by vulnerabilities in the Snort 3 Visual Basic for Applications VBA Decompression Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to unexpectedly restart, resulting in a denial of service DoS condition. For mor...

Cisco Secure Firewall Threat Defense Software TLS with Snort 3 Detection Engine Denial of Service Vulnerability

A vulnerability in the TLS cryptography functionality of the Snort 3 Detection Engine of Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to unexpectedly restart, resulting in a denial of service DoS condition...

PT-2026-23017

A vulnerability in the memory management handling for the Snort 3 Detection Engine of Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart. This vulnerability is due to a logic error in memory management...

PT-2026-23009

A vulnerability in the TLS cryptography functionality of the Snort 3 Detection Engine of Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to unexpectedly restart, resulting in a denial of service DoS condition...

PT-2026-23018

Multiple Cisco products are affected by a vulnerability in the Snort 3 VBA feature that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash. This vulnerability is due to improper range checking when decompressing VBA data, which is user controlled. An...

PT-2026-23019

Multiple Cisco products are affected by a vulnerability in the Snort 3 VBA feature that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash. This vulnerability is due to improper error checking when decompressing VBA data. An attacker could exploit this...

PT-2026-23021

Name of the Vulnerable Software and Affected Versions Cisco products affected versions not specified Description Multiple Cisco products contain flaws in the Snort 3 VBA feature. The issue stems from improper error checking during the decompression of VBA data. An unauthenticated remote attacker...

PT-2026-23020

Multiple Cisco products are affected by a vulnerability in the Snort 3 Visual Basic for Applications VBA feature which could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash. This vulnerability is due to lack of proper error checking when decompressing VBA...

PT-2026-23023

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 binder...

PT-2026-23024

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 JSTokenize...

PT-2026-23026

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...

PT-2026-23025

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...

Cisco IOS XE Software Unified Threat Defense Snort Intrusion Prevention System Engine Multiple Vulnerabilities (cisco-sa-snort3-dcerpc-vulns-J9HNF4tH)

According to its self-reported version, Cisco IOS-XE Software is affected by the following vulnerabilities: - A vulnerability in the processing of DCE/RPC requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak sensitive information or to restar...

Cisco Firepower Threat Defense (FTD) Software Multiple Vulnerabilities (cisco-sa-snort3-dcerpc-vulns-J9HNF4tH)

According to its self-reported version, Cisco Secure Firewall Threat Defense FTD Software is affected by the following vulnerabilities: - A vulnerability in the processing of DCE/RPC requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak...

CVE-2026-20026

Multiple Cisco products are affected by a vulnerability in the processing of DCE/RPC requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak sensitive information or to restart, resulting in an interruption of packet inspection. This vulnerabili...

CVE-2026-20026

CVE-2026-20026 (and related 20027) affect Cisco Snort 3 in multiple Cisco products (e.g., IOS XE, Meraki, FTD). Root cause: buffer handling error during DCE/RPC request processing leading to a use-after-free read (20026) and, in another variant, a possible out-of-bounds read (20027). Impacts: una...

CVE-2026-20026 Multiple Cisco Products Snort 3 DCERPC Vulnerabilities

Multiple Cisco products are affected by a vulnerability in the processing of DCE/RPC requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak sensitive information or to restart, resulting in an interruption of packet inspection. This vulnerabili...