What’s Vulnerable › Products

Cisco Open Source Snort3 vulnerabilities

13 known vulnerabilities, 0 confirmed exploited in the wild (CISA KEV), 13 published in the last 12 months.

Check whether your Cisco Open Source Snort3 version is affected

Latest Cisco Open Source Snort3 vulnerabilities

• CVE-2026-76524 — Open Source Snort 3 Control Channel Socket Aribitrary Command Execution Vulnerability (CVSS 7.8)
• CVE-2026-76489 — Multiple Cisco Products Snort 3 Generic File Processing Memory Exhaustion Denial of Service Vulnerability (CVSS 5.8)
• CVE-2026-76445 — Multiple Cisco Products Snort 3 Denial of Service Vulnerability (CVSS 5.3)
• CVE-2026-20356 — Multiple Cisco Products Snort 3 Software Hardening Release: October 2026 (CVSS 7.5)
• CVE-2026-20236 — Multiple Cisco Products Snort 3 Software Hardening Release: October 2026 (CVSS 7.5)
• CVE-2026-20291 — Multiple Cisco Products Snort 3 Software Hardening Release: October 2026 (CVSS 7.8)
• CVE-2026-20221 — Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities (CVSS 5.8)
• CVE-2026-20197 — Multiple Cisco Products Snort 3 Teredo Protocol Denial of Service Vulnerability (CVSS 5.8)
• CVE-2026-20218 — Cisco Secure Firewall Threat Defense Snort 3 Visual Basic for Applications Buffer Overflow Denial of Service Vulnerability (CVSS 5.8)
• CVE-2026-20179 — Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities (CVSS 5.8)
• CVE-2026-20043 — Multiple Cisco Products Snort 3 Software Hardening Release: October 2026 (CVSS 9.0)
• CVE-2026-20019 — Multiple Cisco Products Snort 3 Netflow Denial of Service Vulnerabilities (CVSS 5.8)
• CVE-2026-20011 — Multiple Cisco Products Snort 3 SMTP MIME Denial of Service Vulnerability (CVSS 5.8)