What’s Vulnerable › Vulnerabilities
CVE-2026-20291: Multiple Cisco Products Snort 3 Software Hardening Release: October 2026
- Severity: high (CVSS 7.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-21 · updated 2026-10-22
- Weakness: CWE-269
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.
Affected products
- Cisco Open Source Snort3: 3.12.2.0, 3.1.2.0, 3.1.3.0, 3.1.4.0, 3.1.5.0, 3.1.6.0 (+99)
- Cisco Cyber Vision: 3.0.0, 3.0.2, 3.0.3, 3.0.1, 3.1.0, 3.0.4 (+59)
- Cisco Firepower Threat Defense Software: 7.0.0, 7.0.0.1, 7.0.1, 7.0.1.1, 7.0.2, 7.2.0 (+54)
- Cisco UTD SNORT IPS Engine Software: 17.12.1a, 17.12.2, 17.13.1a, 17.12.3, 17.14.1a, 17.12.4 (+32)
In the news
- Multiple Cisco Products Snort 3 Security Hardening Release: October 2026
- Cisco Advance Notification for Publication of October 21, 2026, Security Advisories
References
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