Multiple Cisco Products Snort 3 TBD Denial of Service Vulnerability
Priority LOW 33CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-400.
Summary
Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection. This vulnerability is due to an error in the JSTokenizer normalization logic when the HTTP inspection normalizes JavaScript. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection that is parsed by Snort 3. A successful exploit could allow the attacker to cause a DoS condition when the Snort 3 Detection Engine restarts unexpectedly. JSTokenizer is not enabled by default.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00516 44th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.4.0; 7.4.1; 7.4.1.1; 7.6.0; 7.4.2; 7.4.2.1; 7.7.0; 7.4.2.2; 7.6.1; 7.4.2.3; 7.6.2; 7.7.10; 7.6.2.1; 7.7.10.1; 7.4.2.4; 7.4.3 | — | No fix listed | CNA |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.3.1a; 17.2.1r; 17.3.2; 17.4.1a; 17.5.1; 17.3.3; 17.5.1a; 17.3.4; 17.3.4a; 17.4.2; 17.4.1b; 17.6.1a; 17.7.1a; 17.6.2; 17.8.1a; 17.3.5; 17.6.3; 17.6.3a; 17.7.2; 17.9.1a; 17.6.4; 17.10.1a; 17.3.6; 17.3.7; 17.9.2a; 17.6.5; 17.11.1a; 17.9.3a; 17.12.1a; 17.9.4; 17.6.6; 17.3.8; 17.3.8a; 17.6.6a; 17.9.4a; 17.12.2; 17.13.1a; 17.9.5a; 17.12.3; 17.6.7; 17.14.1a; 17.12.4; 17.12.3a; 17.15.1a; 17.6.8; 17.9.6; 17.6.8a; 17.16.1a; 17.9.5e; 17.12.4a; 17.15.2c; 17.9.5f; 17.12.4b; 17.15.2a; 17.12.5; 17.17.1; 17.12.5a; 17.9.7a; 17.15.3a; 17.15.3; 17.12.5b; 17.12.5c; 17.15.4; 17.9.7b; 17.18.1; 17.18.1a; 17.12.6; 17.9.8; 17.15.4c; 17.12.5d; 17.18.2 | — | No fix listed | CNA |
- Cisco Secure Firewall Threat Defense (FTD) Software VendorCisco Affected 7.4.0; 7.4.1; 7.4.1.1; 7.6.0; 7.4.2; 7.4.2.1; 7.7.0; 7.4.2.2; 7.6.1; 7.4.2.3; 7.6.2; 7.7.10; 7.6.2.1; 7.7.10.1; 7.4.2.4; 7.4.3 Fixed in — No fix listed CNA
- Cisco UTD SNORT IPS Engine Software VendorCisco Affected 17.3.1a; 17.2.1r; 17.3.2; 17.4.1a; 17.5.1; 17.3.3; 17.5.1a; 17.3.4; 17.3.4a; 17.4.2; 17.4.1b; 17.6.1a; 17.7.1a; 17.6.2; 17.8.1a; 17.3.5; 17.6.3; 17.6.3a; 17.7.2; 17.9.1a; 17.6.4; 17.10.1a; 17.3.6; 17.3.7; 17.9.2a; 17.6.5; 17.11.1a; 17.9.3a; 17.12.1a; 17.9.4; 17.6.6; 17.3.8; 17.3.8a; 17.6.6a; 17.9.4a; 17.12.2; 17.13.1a; 17.9.5a; 17.12.3; 17.6.7; 17.14.1a; 17.12.4; 17.12.3a; 17.15.1a; 17.6.8; 17.9.6; 17.6.8a; 17.16.1a; 17.9.5e; 17.12.4a; 17.15.2c; 17.9.5f; 17.12.4b; 17.15.2a; 17.12.5; 17.17.1; 17.12.5a; 17.9.7a; 17.15.3a; 17.15.3; 17.12.5b; 17.12.5c; 17.15.4; 17.9.7b; 17.18.1; 17.18.1a; 17.12.6; 17.9.8; 17.15.4c; 17.12.5d; 17.18.2 Fixed in — No fix listed CNA
CPE configurations NVD · 88
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:snort:*:*:*:*:*:*:*:* | 3.0.0-233 to before 3.9.7.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.0:*:*:*:*:*:*:* | 7.4.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.1:*:*:*:*:*:*:* | 7.4.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.1.1:*:*:*:*:*:*:* | 7.4.1.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2:*:*:*:*:*:*:* | 7.4.2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2.1:*:*:*:*:*:*:* | 7.4.2.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2.2:*:*:*:*:*:*:* | 7.4.2.2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2.3:*:*:*:*:*:*:* | 7.4.2.3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2.4:*:*:*:*:*:*:* | 7.4.2.4 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.3:*:*:*:*:*:*:* | 7.4.3 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:snort:*:*:*:*:*:*:*:* Versions 3.0.0-233 to before 3.9.7.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.0:*:*:*:*:*:*:* Versions 7.4.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.1:*:*:*:*:*:*:* Versions 7.4.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.1.1:*:*:*:*:*:*:* Versions 7.4.1.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2:*:*:*:*:*:*:* Versions 7.4.2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2.1:*:*:*:*:*:*:* Versions 7.4.2.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2.2:*:*:*:*:*:*:* Versions 7.4.2.2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2.3:*:*:*:*:*:*:* Versions 7.4.2.3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2.4:*:*:*:*:*:*:* Versions 7.4.2.4 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.3:*:*:*:*:*:*:* Versions 7.4.3 Vulnerable ·Cisco
Show 78 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.0:*:*:*:*:*:*:* | 7.6.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.1:*:*:*:*:*:*:* | 7.6.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.2:*:*:*:*:*:*:* | 7.6.2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.2.1:*:*:*:*:*:*:* | 7.6.2.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:7.7.0:*:*:*:*:*:*:* | 7.7.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:7.7.10:*:*:*:*:*:*:* | 7.7.10 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:7.7.10.1:*:*:*:*:*:*:* | 7.7.10.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.2.1r:*:*:*:*:*:*:* | 17.2.1r | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.1a:*:*:*:*:*:*:* | 17.3.1a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.2:*:*:*:*:*:*:* | 17.3.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.3:*:*:*:*:*:*:* | 17.3.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.4:*:*:*:*:*:*:* | 17.3.4 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.4a:*:*:*:*:*:*:* | 17.3.4a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.5:*:*:*:*:*:*:* | 17.3.5 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.6:*:*:*:*:*:*:* | 17.3.6 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.7:*:*:*:*:*:*:* | 17.3.7 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.8:*:*:*:*:*:*:* | 17.3.8 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.8a:*:*:*:*:*:*:* | 17.3.8a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.4.1a:*:*:*:*:*:*:* | 17.4.1a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.4.1b:*:*:*:*:*:*:* | 17.4.1b | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.4.2:*:*:*:*:*:*:* | 17.4.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.5.1:*:*:*:*:*:*:* | 17.5.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.5.1a:*:*:*:*:*:*:* | 17.5.1a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.1a:*:*:*:*:*:*:* | 17.6.1a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.2:*:*:*:*:*:*:* | 17.6.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.3:*:*:*:*:*:*:* | 17.6.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.3a:*:*:*:*:*:*:* | 17.6.3a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.4:*:*:*:*:*:*:* | 17.6.4 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.5:*:*:*:*:*:*:* | 17.6.5 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.6:*:*:*:*:*:*:* | 17.6.6 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.6a:*:*:*:*:*:*:* | 17.6.6a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.7:*:*:*:*:*:*:* | 17.6.7 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.8:*:*:*:*:*:*:* | 17.6.8 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.8a:*:*:*:*:*:*:* | 17.6.8a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.7.1a:*:*:*:*:*:*:* | 17.7.1a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.7.2:*:*:*:*:*:*:* | 17.7.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.8.1a:*:*:*:*:*:*:* | 17.8.1a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.1a:*:*:*:*:*:*:* | 17.9.1a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.2a:*:*:*:*:*:*:* | 17.9.2a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.3a:*:*:*:*:*:*:* | 17.9.3a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.4:*:*:*:*:*:*:* | 17.9.4 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.4a:*:*:*:*:*:*:* | 17.9.4a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.5a:*:*:*:*:*:*:* | 17.9.5a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.5e:*:*:*:*:*:*:* | 17.9.5e | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.5f:*:*:*:*:*:*:* | 17.9.5f | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.6:*:*:*:*:*:*:* | 17.9.6 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.7a:*:*:*:*:*:*:* | 17.9.7a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.7b:*:*:*:*:*:*:* | 17.9.7b | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.8:*:*:*:*:*:*:* | 17.9.8 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.10.1a:*:*:*:*:*:*:* | 17.10.1a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.11.1a:*:*:*:*:*:*:* | 17.11.1a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.1a:*:*:*:*:*:*:* | 17.12.1a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.2:*:*:*:*:*:*:* | 17.12.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.3:*:*:*:*:*:*:* | 17.12.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.3a:*:*:*:*:*:*:* | 17.12.3a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.4:*:*:*:*:*:*:* | 17.12.4 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.4a:*:*:*:*:*:*:* | 17.12.4a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.4b:*:*:*:*:*:*:* | 17.12.4b | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.5:*:*:*:*:*:*:* | 17.12.5 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.5a:*:*:*:*:*:*:* | 17.12.5a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.5b:*:*:*:*:*:*:* | 17.12.5b | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.5c:*:*:*:*:*:*:* | 17.12.5c | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.5d:*:*:*:*:*:*:* | 17.12.5d | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.6:*:*:*:*:*:*:* | 17.12.6 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.13.1a:*:*:*:*:*:*:* | 17.13.1a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.14.1a:*:*:*:*:*:*:* | 17.14.1a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.1a:*:*:*:*:*:*:* | 17.15.1a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.2a:*:*:*:*:*:*:* | 17.15.2a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.2c:*:*:*:*:*:*:* | 17.15.2c | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.3:*:*:*:*:*:*:* | 17.15.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.3a:*:*:*:*:*:*:* | 17.15.3a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.4:*:*:*:*:*:*:* | 17.15.4 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.4c:*:*:*:*:*:*:* | 17.15.4c | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.16.1a:*:*:*:*:*:*:* | 17.16.1a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.17.1:*:*:*:*:*:*:* | 17.17.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.18.1:*:*:*:*:*:*:* | 17.18.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.18.1a:*:*:*:*:*:*:* | 17.18.1a | Vulnerable | Cisco |
| cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.18.2:*:*:*:*:*:*:* | 17.18.2 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.0:*:*:*:*:*:*:* Versions 7.6.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.1:*:*:*:*:*:*:* Versions 7.6.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.2:*:*:*:*:*:*:* Versions 7.6.2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.2.1:*:*:*:*:*:*:* Versions 7.6.2.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:7.7.0:*:*:*:*:*:*:* Versions 7.7.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:7.7.10:*:*:*:*:*:*:* Versions 7.7.10 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:7.7.10.1:*:*:*:*:*:*:* Versions 7.7.10.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.2.1r:*:*:*:*:*:*:* Versions 17.2.1r Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.1a:*:*:*:*:*:*:* Versions 17.3.1a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.2:*:*:*:*:*:*:* Versions 17.3.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.3:*:*:*:*:*:*:* Versions 17.3.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.4:*:*:*:*:*:*:* Versions 17.3.4 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.4a:*:*:*:*:*:*:* Versions 17.3.4a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.5:*:*:*:*:*:*:* Versions 17.3.5 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.6:*:*:*:*:*:*:* Versions 17.3.6 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.7:*:*:*:*:*:*:* Versions 17.3.7 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.8:*:*:*:*:*:*:* Versions 17.3.8 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.3.8a:*:*:*:*:*:*:* Versions 17.3.8a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.4.1a:*:*:*:*:*:*:* Versions 17.4.1a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.4.1b:*:*:*:*:*:*:* Versions 17.4.1b Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.4.2:*:*:*:*:*:*:* Versions 17.4.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.5.1:*:*:*:*:*:*:* Versions 17.5.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.5.1a:*:*:*:*:*:*:* Versions 17.5.1a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.1a:*:*:*:*:*:*:* Versions 17.6.1a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.2:*:*:*:*:*:*:* Versions 17.6.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.3:*:*:*:*:*:*:* Versions 17.6.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.3a:*:*:*:*:*:*:* Versions 17.6.3a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.4:*:*:*:*:*:*:* Versions 17.6.4 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.5:*:*:*:*:*:*:* Versions 17.6.5 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.6:*:*:*:*:*:*:* Versions 17.6.6 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.6a:*:*:*:*:*:*:* Versions 17.6.6a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.7:*:*:*:*:*:*:* Versions 17.6.7 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.8:*:*:*:*:*:*:* Versions 17.6.8 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.8a:*:*:*:*:*:*:* Versions 17.6.8a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.7.1a:*:*:*:*:*:*:* Versions 17.7.1a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.7.2:*:*:*:*:*:*:* Versions 17.7.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.8.1a:*:*:*:*:*:*:* Versions 17.8.1a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.1a:*:*:*:*:*:*:* Versions 17.9.1a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.2a:*:*:*:*:*:*:* Versions 17.9.2a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.3a:*:*:*:*:*:*:* Versions 17.9.3a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.4:*:*:*:*:*:*:* Versions 17.9.4 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.4a:*:*:*:*:*:*:* Versions 17.9.4a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.5a:*:*:*:*:*:*:* Versions 17.9.5a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.5e:*:*:*:*:*:*:* Versions 17.9.5e Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.5f:*:*:*:*:*:*:* Versions 17.9.5f Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.6:*:*:*:*:*:*:* Versions 17.9.6 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.7a:*:*:*:*:*:*:* Versions 17.9.7a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.7b:*:*:*:*:*:*:* Versions 17.9.7b Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.8:*:*:*:*:*:*:* Versions 17.9.8 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.10.1a:*:*:*:*:*:*:* Versions 17.10.1a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.11.1a:*:*:*:*:*:*:* Versions 17.11.1a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.1a:*:*:*:*:*:*:* Versions 17.12.1a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.2:*:*:*:*:*:*:* Versions 17.12.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.3:*:*:*:*:*:*:* Versions 17.12.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.3a:*:*:*:*:*:*:* Versions 17.12.3a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.4:*:*:*:*:*:*:* Versions 17.12.4 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.4a:*:*:*:*:*:*:* Versions 17.12.4a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.4b:*:*:*:*:*:*:* Versions 17.12.4b Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.5:*:*:*:*:*:*:* Versions 17.12.5 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.5a:*:*:*:*:*:*:* Versions 17.12.5a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.5b:*:*:*:*:*:*:* Versions 17.12.5b Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.5c:*:*:*:*:*:*:* Versions 17.12.5c Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.5d:*:*:*:*:*:*:* Versions 17.12.5d Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.6:*:*:*:*:*:*:* Versions 17.12.6 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.13.1a:*:*:*:*:*:*:* Versions 17.13.1a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.14.1a:*:*:*:*:*:*:* Versions 17.14.1a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.1a:*:*:*:*:*:*:* Versions 17.15.1a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.2a:*:*:*:*:*:*:* Versions 17.15.2a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.2c:*:*:*:*:*:*:* Versions 17.15.2c Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.3:*:*:*:*:*:*:* Versions 17.15.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.3a:*:*:*:*:*:*:* Versions 17.15.3a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.4:*:*:*:*:*:*:* Versions 17.15.4 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.4c:*:*:*:*:*:*:* Versions 17.15.4c Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.16.1a:*:*:*:*:*:*:* Versions 17.16.1a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.17.1:*:*:*:*:*:*:* Versions 17.17.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.18.1:*:*:*:*:*:*:* Versions 17.18.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.18.1a:*:*:*:*:*:*:* Versions 17.18.1a Vulnerable ·Cisco
- cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.18.2:*:*:*:*:*:*:* Versions 17.18.2 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-20066
- 2026-10-03 Alias added: GHSA-rcxv-vmj3-3mj9
References
Advisory 1
More Cisco Secure Firewall Threat Defense vulnerabilities
- TI-2025-14628 Buffer overflow in Cisco Secure Firewall Adaptive Security Appliance Software KEVCVSS 3.1CRITICAL 9.9
- TI-2021-19919 Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints KEVCVSS 3.1CRITICAL 10.0
- TI-2023-06973 Authentication bypass in Cisco Adaptive Security Appliance Software KEVCVSS 3.1CRITICAL 9.1
- TI-2026-82192 Denial of service in Cisco Secure Firewall ASA and FTD SSL VPN KEVCVSS 3.1HIGH 8.6
- TI-2026-16533 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense… KEVCVSS 3.1HIGH 8.6
- TI-2025-14657 Missing authorization in Cisco Secure Firewall Adaptive Security Appliance Software KEVCVSS 3.1HIGH 8.6
Sources
- CVE-2026-20066 · CVE Program
- CVE-2026-20066 · NVD
- FIRST EPSS
- GHSA-rcxv-vmj3-3mj9 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences