Suricata and Snort vulnerabilities and fixes

CVEs that mention Suricata and Snort, ranked by priority. 3 tracked.

Suricata and Snort has 3 tracked vulnerabilities, 1 critical. A fixed release or vendor patch exists for 2. Most recent: 2026-10-21. Highest priority: CVE-2026-20043 (score 41/100).

• CVE-2026-20043 CRITICAL 9.0 As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source S
• CVE-2026-20218 MEDIUM 5.8 A vulnerability in the Snort 3 Visual Basic for Applications (VBA) Decompression Engine of multiple Cisco prod
• CVE-2026-20291 HIGH 7.8 As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source S

FAQ

How do I fix Suricata and Snort vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is Suricata and Snort being exploited right now?

None of the tracked Suricata and Snort CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which Suricata and Snort CVE should I patch first?

CVE-2026-20043 currently ranks highest (41/100): As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source S.

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