CVE-2026-20054
Severity
5.8MEDIUM
EPSS
0.1%
top 66.94%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMar 4
Description
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…
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:LExploitability: 3.9 | Impact: 1.4
Affected Packages3 packages
🔴Vulnerability Details
2GHSA▶
GHSA-ppp5-3mr9-mww7: Multiple Cisco products are affected by a vulnerability in the Snort 3 VBA feature that could allow an unauthenticated, remote attacker to cause the S↗2026-03-04
CVEList▶
Cisco Secure Firewall Threat Defense Software Snort 3 Visual Basic for Application Infinite Loop Denial of Service Vulnerability↗2026-03-04
📋Vendor Advisories
1Cisco▶
Multiple Cisco Products Snort 3 Visual Basic for Applications Denial of Service Vulnerabilities↗2026-03-04