Vulnslist

Cisco vulnerabilities by product, model, software, and advisory.

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 SSL handshake ingress packets. An attacker could exploit this vulnerability by sending crafted SSL handshake packets. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when the Snort 3 Detection Engine restarts unexpectedly.

SeverityMEDIUM
CVSS5.8
CWECWE-392
KEV
Published
Modified

Related Products

Product Advisory Evidence
Cisco UTD SNORT IPS Engine Software cisco-sa-snort3-multi-dos-XFWkWSwz Cisco OpenVuln
Cisco Secure Firewall Threat Defense Virtual cisco-sa-snort3-multi-dos-XFWkWSwz Cisco OpenVuln
Cisco Secure Firewall Threat Defense (FTD) Software cisco-sa-snort3-multi-dos-XFWkWSwz Cisco OpenVuln
Cisco Secure Firewall 4200 Series cisco-sa-snort3-multi-dos-XFWkWSwz Cisco OpenVuln
Cisco Secure Firewall 3100 Series cisco-sa-snort3-multi-dos-XFWkWSwz Cisco OpenVuln
Cisco Secure Firewall 1200 Series cisco-sa-snort3-multi-dos-XFWkWSwz Cisco OpenVuln
Cisco Firepower 9000 Series cisco-sa-snort3-multi-dos-XFWkWSwz Cisco OpenVuln
Cisco Firepower 4100 Series cisco-sa-snort3-multi-dos-XFWkWSwz Cisco OpenVuln
Cisco Firepower 2100 Series cisco-sa-snort3-multi-dos-XFWkWSwz Cisco OpenVuln
Cisco Firepower 1000 Series cisco-sa-snort3-multi-dos-XFWkWSwz Cisco OpenVuln
Cisco Cyber Vision cisco-sa-snort3-multi-dos-XFWkWSwz Cisco OpenVuln
Cisco ASA 5500-X Series Firewalls cisco-sa-snort3-multi-dos-XFWkWSwz Cisco OpenVuln
Cisco 3000 Series Industrial Security Appliances (ISA) cisco-sa-snort3-multi-dos-XFWkWSwz Cisco OpenVuln