CVE-2026-20057

MediumCVSS 5.8/10Last modified Aug 20, 2026

Description

Multiple Cisco products are affected by a vulnerability in the Snort 3 Visual Basic for Applications (VBA) feature which could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash.    This vulnerability is due to lack of proper error checking when decompressing VBA data. An attacker could exploit this vulnerability by sending a 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 unexpectedly restart causing a a denial of service (DoS) condition.

Metrics

CVSS 3.1 5.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

Weakness enumeration

CWE-369

Affected software

No affected versions have been published.

Timeline

Published
Mar 4, 2026
Last modified
Aug 20, 2026
NVD status
Analyzed

Related CVEs from 2026

CVE-2026-200585.8Multiple Cisco products are affected by vulnerabilities in the Snort 3 VBA feature that could allow an unauthenticated, remote attacker to cCVE-2026-200596.1A vulnerability in the web-based management interface of Cisco Unity Connection could allow an unauthenticated, remote attacker to conduct aCVE-2026-20068.8Missing validation of multibyte character length in PostgreSQL text manipulation allows a database user to issue crafted queries that achievCVE-2026-200604.7A vulnerability in the web-based management interface of Cisco Unity Connection could allow an unauthenticated, remote attacker to redirect CVE-2026-200616.5A vulnerability in the web-based management interface of Cisco Unity Connection could allow an authenticated, remote attacker to perform an CVE-2026-200627.2A vulnerability in the CLI of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software in multiple context mode could allow an autheCVE-2026-200636.0A vulnerability in the CLI of Cisco Secure FTD Software could allow an authenticated, local attacker to execute arbitrary commands on the unCVE-2026-200646.5A vulnerability in of Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, local attacker to cause the device tCVE-2026-200655.8Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attackerCVE-2026-200665.8Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attackerCVE-2026-200675.8Multiple Cisco products are affected by a vulnerability in the Snort 3 detection engine that could allow an unauthenticated, remote attackerCVE-2026-200685.8Multiple Cisco products are affected by a vulnerability in the Snort 3 detection engine that could allow an unauthenticated, remote attacker
CVE-2026-20057: Medium severity, CVSS 5.8 | Vulnix