CVE-2026-20053
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 range checking when decompressing VBA data, which is user controlled. 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 an overflow of heap dat…
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
2CVEList▶
Cisco Secure Firewall Threat Defense Software Snort 3 Visual Basic for Application Heap Overflow Denial of Service Vulnerability↗2026-03-04
GHSA▶
GHSA-6wj9-h5wq-gm77: 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
📋Vendor Advisories
1Cisco▶
Multiple Cisco Products Snort 3 Visual Basic for Applications Denial of Service Vulnerabilities↗2026-03-04