Description
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.
Published: 2026-10-21
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: Improper Privilege Management
Action: Immediate Patch
AI Analysis

Impact

The CVE involves incorrect privilege handling that permits unauthorized escalation of privileges. An attacker could obtain higher access levels, compromising confidentiality, integrity, or availability of the affected systems. The weakness is identified as CWE-269, which covers improper privilege management.

Affected Systems

Cisco Cyber Vision, Cisco Open Source Snort3, Cisco Secure Firewall Threat Defense (FTD) Software, and Cisco UTD SNORT IPS Engine Software are listed as affected. No specific version information is available in the advisory.

Risk and Exploitability

The vulnerability has a CVSS score of 7.8 and is not currently listed in the CISA KEV catalog. EPSS data is not available, indicating limited publicly known exploitation. An attacker would need access to administrative interfaces or exploit locally privileged processes to abuse the flaw; the exact attack vector is not detailed in the advisory, so the likelihood remains moderate based on the CVSS rating.

Generated by OpenCVE AI on October 22, 2026 at 04:21 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply Cisco’s hardening releases for Snort 3 and related products that address the improper privilege management flaw.
  • Restrict or disable unnecessary administrative privileges on affected systems, following the vendor’s guidance for the hardening release.
  • Continuously monitor system logs for signs of unauthorized privilege escalation and enforce the principle of least privilege on all components.

Generated by OpenCVE AI on October 22, 2026 at 04:21 UTC.

Tracking

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Advisories

No advisories yet.

History

Thu, 22 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 21 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Multiple Cisco Products Snort 3 Software Hardening Release: October 2026
Weaknesses CWE-269
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-10-22T13:37:55.536Z

Reserved: 2025-10-08T11:59:15.405Z

Link: CVE-2026-20291

cve-icon Vulnrichment

Updated: 2026-10-22T13:36:59.445Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-21T17:18:28.473

Modified: 2026-10-22T14:17:41.480

Link: CVE-2026-20291

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-22T04:30:05Z

Weaknesses
  • CWE-269

    Improper Privilege Management