PatchTheCEVCVE-2026-20291: As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source S
28
Routine
HIGH 7.8
CVE-2026-20291 is a high-severity flaw (CVSS 7.8) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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
Why this priority
- High severity
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 7.8 (High) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.1% (top 98%) |
| CISA exploited list | No |
| Weakness | CWE-269 |
| Published | 2026-10-21 |
| Last modified | 2026-10-22 |
Publisher (CNA): Cisco Systems, Inc.
Timeline
- Published CVE record published
- Updated Record last modified
Advisories and coverage
Official advisories
- Cisco Security Advisories: Multiple Cisco Products Snort 3 Security Hardening Release: October 2026 2026-10-22
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Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.