Vulnslist

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

CVE-2026-20054

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 vulnerability 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 enter an infinite loop, causing a DoS condition.

SeverityMEDIUM
CVSS5.8
CWECWE-835
KEV
Published
Modified

Related Products

Product Advisory Evidence
Cisco UTD SNORT IPS Engine Software cisco-sa-ftd-snort3-vbavuls-96UcVVed Cisco OpenVuln
Cisco Secure Firewall Threat Defense Virtual cisco-sa-ftd-snort3-vbavuls-96UcVVed Cisco OpenVuln
Cisco Secure Firewall Threat Defense (FTD) Software cisco-sa-ftd-snort3-vbavuls-96UcVVed Cisco OpenVuln
Cisco Secure Firewall 4200 Series cisco-sa-ftd-snort3-vbavuls-96UcVVed Cisco OpenVuln
Cisco Secure Firewall 3100 Series cisco-sa-ftd-snort3-vbavuls-96UcVVed Cisco OpenVuln
Cisco Secure Firewall 1200 Series cisco-sa-ftd-snort3-vbavuls-96UcVVed Cisco OpenVuln
Cisco Firepower 9000 Series cisco-sa-ftd-snort3-vbavuls-96UcVVed Cisco OpenVuln
Cisco Firepower 4100 Series cisco-sa-ftd-snort3-vbavuls-96UcVVed Cisco OpenVuln
Cisco Firepower 2100 Series cisco-sa-ftd-snort3-vbavuls-96UcVVed Cisco OpenVuln
Cisco Firepower 1000 Series cisco-sa-ftd-snort3-vbavuls-96UcVVed Cisco OpenVuln
Cisco Cyber Vision cisco-sa-ftd-snort3-vbavuls-96UcVVed Cisco OpenVuln
Cisco 3000 Series Industrial Security Appliances (ISA) cisco-sa-ftd-snort3-vbavuls-96UcVVed Cisco OpenVuln