---
id: CVE-2026-20291
title: 'Multiple Cisco Products Snort 3 Software Hardening Release: October 2026'
summary: >-
  As part of Cisco's ongoing commitment to proactive security and product
  quality, the Cisco owned Open Source Snort 3 Software engineering team has
  conducted a comprehensive internal security review. This review resulted in
  software harde…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-269
vendor: Cisco
product: Cisco Cyber Vision
affected:
  - cyber_vision 3.0.0
  - cyber_vision 3.0.2
  - cyber_vision 3.0.3
  - cyber_vision 3.0.1
  - cyber_vision 3.1.0
  - cyber_vision 3.0.4
  - cyber_vision 3.1.1
  - cyber_vision 3.1.2
  - cyber_vision 3.2.0
  - cyber_vision 3.0.5
  - cyber_vision 3.2.1
  - cyber_vision 3.0.6
  - cyber_vision 3.2.2
  - cyber_vision 3.2.3
  - cyber_vision 3.2.4
  - cyber_vision 4.0.0
  - cyber_vision 4.0.1
  - cyber_vision 4.0.2
  - cyber_vision 4.0.3
  - cyber_vision 4.1.0
  - cyber_vision 4.1.1
  - cyber_vision 4.1.2
  - cyber_vision 4.1.3
  - cyber_vision 4.1.4
  - cyber_vision 4.2.0
  - cyber_vision 4.2.1
  - cyber_vision 4.1.5
  - cyber_vision 4.2.2
  - cyber_vision 4.2.X
  - cyber_vision 4.2.3
  - cyber_vision 4.2.4
  - cyber_vision 4.2.6
  - cyber_vision 4.1.6
  - cyber_vision 4.3.0
  - cyber_vision 4.3.1
  - cyber_vision 4.3.2
  - cyber_vision 4.3.3
  - cyber_vision 4.4.0
  - cyber_vision 4.4.1
  - cyber_vision 4.4.2
  - cyber_vision 4.4.3
  - cyber_vision 4.1.7
  - cyber_vision 5.0.0
  - cyber_vision 5.0.1
  - cyber_vision 5.0.2
  - cyber_vision 5.1.0
  - cyber_vision 5.1.1
  - cyber_vision 5.1.2
  - cyber_vision 5.1.3
  - cyber_vision 5.2.0
published: '2026-10-21'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T16:12:53.383Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-20291'
references:
  - url: >-
      https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-snort3-ybgmhTQe
    label: cisco-sa-hardening-snort3-ybgmhTQe
tags:
  - cve.org
ingestedAt: '2026-10-21T17:07:51.308Z'
---

## Overview

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.

The vulnerabilities tracked by CVE-2026-20291 are related to issues concerning improper privilege management that are grouped under the Common Weakness Enumeration (CWE) Base CWE-269.

## Affected

- `cyber_vision 3.0.0`
- `cyber_vision 3.0.2`
- `cyber_vision 3.0.3`
- `cyber_vision 3.0.1`
- `cyber_vision 3.1.0`
- `cyber_vision 3.0.4`
- `cyber_vision 3.1.1`
- `cyber_vision 3.1.2`
- `cyber_vision 3.2.0`
- `cyber_vision 3.0.5`
- `cyber_vision 3.2.1`
- `cyber_vision 3.0.6`
- `cyber_vision 3.2.2`
- `cyber_vision 3.2.3`
- `cyber_vision 3.2.4`
- `cyber_vision 4.0.0`
- `cyber_vision 4.0.1`
- `cyber_vision 4.0.2`
- `cyber_vision 4.0.3`
- `cyber_vision 4.1.0`
- `cyber_vision 4.1.1`
- `cyber_vision 4.1.2`
- `cyber_vision 4.1.3`
- `cyber_vision 4.1.4`
- `cyber_vision 4.2.0`
- `cyber_vision 4.2.1`
- `cyber_vision 4.1.5`
- `cyber_vision 4.2.2`
- `cyber_vision 4.2.X`
- `cyber_vision 4.2.3`
- `cyber_vision 4.2.4`
- `cyber_vision 4.2.6`
- `cyber_vision 4.1.6`
- `cyber_vision 4.3.0`
- `cyber_vision 4.3.1`
- `cyber_vision 4.3.2`
- `cyber_vision 4.3.3`
- `cyber_vision 4.4.0`
- `cyber_vision 4.4.1`
- `cyber_vision 4.4.2`
- `cyber_vision 4.4.3`
- `cyber_vision 4.1.7`
- `cyber_vision 5.0.0`
- `cyber_vision 5.0.1`
- `cyber_vision 5.0.2`
- `cyber_vision 5.1.0`
- `cyber_vision 5.1.1`
- `cyber_vision 5.1.2`
- `cyber_vision 5.1.3`
- `cyber_vision 5.2.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.