Product by Cisco
Cisco Open Source Snort3
13 known vulnerabilities in Cisco Open Source Snort3 (Cisco), 0 of them actively exploited (CISA KEV).
Key figures
13
Vulnerabilities
0
Actively exploited (KEV)
0
Used by ransomware
1
Critical
Vulnerabilities
Actively exploited vulnerabilities (CISA KEV) first, then by priority. Click a column header to re-sort the table.
| Critical | CVE-2026-20043 | Multiple Cisco Products Snort 3 Software Hardening Release: October 2026 | 9.0 | |
| High | CVE-2026-20356 | Multiple Cisco Products Snort 3 Software Hardening Release: October 2026 | 7.5 | |
| High | CVE-2026-20236 | Multiple Cisco Products Snort 3 Software Hardening Release: October 2026 | 7.5 | |
| Medium | CVE-2026-20218 | Cisco Open Source Snort3: Stack-based Buffer Overflow | 5.8 | |
| Medium | CVE-2026-20221 | Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities | 5.8 | |
| Medium | CVE-2026-20019 | Multiple Cisco Products Snort 3 Netflow Denial of Service Vulnerabilities | 5.8 | |
| Medium | CVE-2026-20011 | Multiple Cisco Products Snort 3 SMTP MIME Denial of Service Vulnerability | 5.8 | |
| Medium | CVE-2026-20197 | Multiple Cisco Products Snort 3 Teredo Protocol Denial of Service Vulnerability | 5.8 | |
| Medium | CVE-2026-20179 | Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities | 5.8 | |
| Medium | CVE-2026-76445 | Multiple Cisco Products Snort 3 Denial of Service Vulnerability | 5.3 | |
| Medium | CVE-2026-76489 | Cisco Open Source Snort3: Missing Release of Memory after Effective Lifetime | 5.8 | |
| High | CVE-2026-76524 | Open Source Snort 3 Control Channel Socket Aribitrary Command Execution Vulnerability | 7.8 | |
| High | CVE-2026-20291 | Multiple Cisco Products Snort 3 Software Hardening Release: October 2026 | 7.8 |
News
- Cisco Advance Notification for Publication of October 21, 2026, Security Advisoriescisco-psirt
- Multiple Cisco Products Snort 3 Denial of Service Vulnerabilitiescisco-psirt
- Multiple Cisco Products Snort 3 SMTP MIME Denial of Service Vulnerabilitycisco-psirt
- Multiple Cisco Products Snort 3 Visual Basic for Applications Buffer Overflow Denial of Service Vulnerabilitycisco-psirt
- Multiple Cisco Products Snort 3 Denial of Service Vulnerabilitycisco-psirt
- Multiple Cisco Products Snort 3 Security Hardening Release: October 2026cisco-psirt