CVE-2026-20291: Multiple Cisco Products Snort 3 Software Hardening Release: October 2026

Published Oct 21, 2026

Updated

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 Software

1 affected component

Cisco Snort 3

Event History

Oct 21, 2026

CVE Published

via MITRE·04:12 PM

Data Sourced

via MITRE·04:12 PM

DescriptionSeverityWeakness

Frequently Asked Questions

What level of access does an attacker need to exploit this issue?

The CVSS vector indicates that an attacker needs local access and low privileges. No user interaction is required.

What could exploitation allow an attacker to do?

The vulnerability is associated with improper privilege management. The CVSS impact metrics indicate potential high impact to confidentiality, integrity, and availability within the affected security authority.

Is this remotely exploitable?

The supplied CVSS vector lists the attack vector as local, so remote network access alone is not indicated as sufficient for exploitation.

CVE-2026-20291: Multiple Cisco Products Snort 3 Software Hardening Release: October 2026

Affected Software

Event History

Frequently Asked Questions

What level of access does an attacker need to exploit this issue?

What could exploitation allow an attacker to do?

Is this remotely exploitable?

Company

Resources

Contact

Frequently Asked Questions

What level of access does an attacker need to exploit this issue?

What could exploitation allow an attacker to do?

Is this remotely exploitable?