Product by Cisco
Cisco Snort
25 known vulnerabilities in Cisco Snort (Cisco), 0 of them actively exploited (CISA KEV).
Key figures
25
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.
| High | CVE-2021-40114 | Multiple Cisco Products Snort Memory Leak Denial of Service Vulnerability | 6.8 | |
| High | CVE-2021-40116 | Multiple Cisco Products Snort Rule Denial of Service Vulnerability | 8.6 | |
| Medium | CVE-2020-3299 | Multiple Cisco Products SNORT HTTP Detection Engine File Policy Bypass Vulnerability | 5.8 | |
| Medium | CVE-2020-3315 | Multiple Cisco Products Snort HTTP Detection Engine File Policy Bypass Vulnerability | 5.8 | |
| Medium | CVE-2021-1224 | Multiple Cisco Products Snort TCP Fast Open File Policy Bypass Vulnerability | 5.8 | |
| High | CVE-2021-1223 | Multiple Cisco Products Snort HTTP Detection Engine File Policy Bypass Vulnerability | 5.8 | |
| Medium | CVE-2021-1495 | Multiple Cisco Products Snort HTTP Detection Engine File Policy Bypass Vulnerability | 5.8 | |
| High | CVE-2021-34749 | Multiple Cisco Products Server Name Identification Data Exfiltration Vulnerability | 5.8 | |
| Medium | CVE-2021-1236 | Multiple Cisco Products Snort Application Detection Engine Policy Bypass Vulnerability | 4.0 | |
| High | CVE-2017-6657 | Cisco Snort++: security vulnerability | 7.5 | |
| Medium | CVE-2021-1494 | Cisco UTD SNORT IPS Engine Software: Protection Mechanism Failure | 5.8 | |
| Not rated | CVE-2001-0669 | Internet Security Systems RealSecure Network Sensor: security vulnerability | — | |
| Medium | CVE-2026-20005 | Cisco Secure Firewall Threat Defense (FTD) Software: Missing Report of Error Condition | 5.8 | |
| Critical | CVE-2025-20359 | Multiple Cisco Products Snort 3 MIME Information Disclosure or Denial of Service Vulnerability | 6.5 | |
| Medium | CVE-2026-20067 | Multiple Cisco Products Snort 3 TBD Denial of Service Vulnerability | 5.8 | |
| Medium | CVE-2026-20066 | Multiple Cisco Products Snort 3 TBD Denial of Service Vulnerability | 5.8 | |
| Medium | CVE-2026-20057 | Cisco Cyber Vision: Divide By Zero | 5.8 | |
| Medium | CVE-2026-20054 | Cisco Cyber Vision: Infinite Loop | 5.8 | |
| Medium | CVE-2026-20068 | Multiple Cisco Products Snort 3 TBD Denial of Service Vulnerability | 5.8 | |
| Medium | CVE-2026-20053 | Cisco Cyber Vision: Heap-based Buffer Overflow | 5.8 | |
| Medium | CVE-2026-20058 | Cisco Secure Firewall Threat Defense (FTD) Software: Access of Memory Location Before Start of Buffer | 5.8 | |
| Medium | CVE-2026-20065 | Multiple Cisco Products Snort 3 TBD Denial of Service Vulnerability | 5.8 | |
| Medium | CVE-2023-20246 | Cisco Firepower Threat Defense Software: Authentication Bypass by Spoofing | 5.8 | |
| High | CVE-2024-20342 | Cisco Firepower Threat Defense Software Rate Filter Bypass Vulnerability | 5.8 | |
| Medium | CVE-2024-20363 | Cisco Firepower Threat Defense Software: Authentication Bypass by Spoofing | 5.8 |