CVE-2026-20054

Name: CVE-2026-20054
Creator: NVD / NIST
Published: 2026-03-04T18:16:19.92+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.8/10EPSS 0.43%

Last modified Jun 17, 2026

This CVE is reserved or awaiting analysis. Details will appear once published by NVD.

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 loop, causing a DoS condition.

Metrics

CVSS 3.1

5.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

EPSS Probability

0.43%

34.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-835

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3-vbavuls-96UcVVed

Timeline

Published: Mar 4, 2026
Last Modified: Jun 17, 2026
Status: Awaiting Analysis

Are you affected by CVE-2026-20054?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST