Cisco Firepower Threat Defense Software Management Access List Bypass Vulnerability
Priority LOW 33CWE-284Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-284.
Summary
A vulnerability in the management access list configuration of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass a configured management interface access list on an affected system. The vulnerability is due to the configuration of different management access lists, with ports allowed in one access list and denied in another. An attacker could exploit this vulnerability by sending crafted remote management traffic to the local IP address of an affected system. A successful exploit could allow the attacker to bypass the configured management access list policies, and traffic to the management interface would not be properly denied.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01374 72nd 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 Firepower Threat Defense Software | all versions | — | No fix listed | CNA |
- Cisco Firepower Threat Defense Software VendorCisco Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 37
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:* | 6.3.0 to before 6.3.0.6; 6.4.0 to before 6.4.0.7; 6.5.0 to before 6.5.0.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:asa_5505_firmware:9.12\(1.6\):*:*:*:*:*:*:* | 9.12(1.6) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:asa_5505_firmware:201.5\(23.16\):*:*:*:*:*:*:* | 201.5(23.16) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asa_5505:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:asa_5510_firmware:9.12\(1.6\):*:*:*:*:*:*:* | 9.12(1.6) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:asa_5510_firmware:201.5\(23.16\):*:*:*:*:*:*:* | 201.5(23.16) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asa_5510:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:asa_5512-x_firmware:9.12\(1.6\):*:*:*:*:*:*:* | 9.12(1.6) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:asa_5512-x_firmware:201.5\(23.16\):*:*:*:*:*:*:* | 201.5(23.16) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asa_5512-x:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:* Versions 6.3.0 to before 6.3.0.6; 6.4.0 to before 6.4.0.7; 6.5.0 to before 6.5.0.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:asa_5505_firmware:9.12\(1.6\):*:*:*:*:*:*:* Versions 9.12(1.6) Vulnerable ·Cisco
- cpe:2.3:o:cisco:asa_5505_firmware:201.5\(23.16\):*:*:*:*:*:*:* Versions 201.5(23.16) Vulnerable ·Cisco
- cpe:2.3:h:cisco:asa_5505:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:asa_5510_firmware:9.12\(1.6\):*:*:*:*:*:*:* Versions 9.12(1.6) Vulnerable ·Cisco
- cpe:2.3:o:cisco:asa_5510_firmware:201.5\(23.16\):*:*:*:*:*:*:* Versions 201.5(23.16) Vulnerable ·Cisco
- cpe:2.3:h:cisco:asa_5510:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:asa_5512-x_firmware:9.12\(1.6\):*:*:*:*:*:*:* Versions 9.12(1.6) Vulnerable ·Cisco
- cpe:2.3:o:cisco:asa_5512-x_firmware:201.5\(23.16\):*:*:*:*:*:*:* Versions 201.5(23.16) Vulnerable ·Cisco
- cpe:2.3:h:cisco:asa_5512-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Show 27 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:asa_5515-x_firmware:9.12\(1.6\):*:*:*:*:*:*:* | 9.12(1.6) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:asa_5515-x_firmware:201.5\(23.16\):*:*:*:*:*:*:* | 201.5(23.16) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asa_5515-x:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:asa_5520_firmware:9.12\(1.6\):*:*:*:*:*:*:* | 9.12(1.6) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:asa_5520_firmware:201.5\(23.16\):*:*:*:*:*:*:* | 201.5(23.16) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asa_5520:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:asa_5525-x_firmware:9.12\(1.6\):*:*:*:*:*:*:* | 9.12(1.6) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:asa_5525-x_firmware:201.5\(23.16\):*:*:*:*:*:*:* | 201.5(23.16) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asa_5525-x:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:asa_5540_firmware:9.12\(1.6\):*:*:*:*:*:*:* | 9.12(1.6) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:asa_5540_firmware:201.5\(23.16\):*:*:*:*:*:*:* | 201.5(23.16) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asa_5540:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:asa_5545-x_firmware:9.12\(1.6\):*:*:*:*:*:*:* | 9.12(1.6) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:asa_5545-x_firmware:201.5\(23.16\):*:*:*:*:*:*:* | 201.5(23.16) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asa_5545-x:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:asa_5550_firmware:9.12\(1.6\):*:*:*:*:*:*:* | 9.12(1.6) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:asa_5550_firmware:201.5\(23.16\):*:*:*:*:*:*:* | 201.5(23.16) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asa_5550:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:asa_5555-x_firmware:9.12\(1.6\):*:*:*:*:*:*:* | 9.12(1.6) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:asa_5555-x_firmware:201.5\(23.16\):*:*:*:*:*:*:* | 201.5(23.16) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asa_5555-x:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:asa_5580_firmware:9.12\(1.6\):*:*:*:*:*:*:* | 9.12(1.6) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:asa_5580_firmware:201.5\(23.16\):*:*:*:*:*:*:* | 201.5(23.16) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asa_5580:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:asa_5585-x_firmware:9.12\(1.6\):*:*:*:*:*:*:* | 9.12(1.6) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:asa_5585-x_firmware:201.5\(23.16\):*:*:*:*:*:*:* | 201.5(23.16) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asa_5585-x:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:o:cisco:asa_5515-x_firmware:9.12\(1.6\):*:*:*:*:*:*:* Versions 9.12(1.6) Vulnerable ·Cisco
- cpe:2.3:o:cisco:asa_5515-x_firmware:201.5\(23.16\):*:*:*:*:*:*:* Versions 201.5(23.16) Vulnerable ·Cisco
- cpe:2.3:h:cisco:asa_5515-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:asa_5520_firmware:9.12\(1.6\):*:*:*:*:*:*:* Versions 9.12(1.6) Vulnerable ·Cisco
- cpe:2.3:o:cisco:asa_5520_firmware:201.5\(23.16\):*:*:*:*:*:*:* Versions 201.5(23.16) Vulnerable ·Cisco
- cpe:2.3:h:cisco:asa_5520:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:asa_5525-x_firmware:9.12\(1.6\):*:*:*:*:*:*:* Versions 9.12(1.6) Vulnerable ·Cisco
- cpe:2.3:o:cisco:asa_5525-x_firmware:201.5\(23.16\):*:*:*:*:*:*:* Versions 201.5(23.16) Vulnerable ·Cisco
- cpe:2.3:h:cisco:asa_5525-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:asa_5540_firmware:9.12\(1.6\):*:*:*:*:*:*:* Versions 9.12(1.6) Vulnerable ·Cisco
- cpe:2.3:o:cisco:asa_5540_firmware:201.5\(23.16\):*:*:*:*:*:*:* Versions 201.5(23.16) Vulnerable ·Cisco
- cpe:2.3:h:cisco:asa_5540:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:asa_5545-x_firmware:9.12\(1.6\):*:*:*:*:*:*:* Versions 9.12(1.6) Vulnerable ·Cisco
- cpe:2.3:o:cisco:asa_5545-x_firmware:201.5\(23.16\):*:*:*:*:*:*:* Versions 201.5(23.16) Vulnerable ·Cisco
- cpe:2.3:h:cisco:asa_5545-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:asa_5550_firmware:9.12\(1.6\):*:*:*:*:*:*:* Versions 9.12(1.6) Vulnerable ·Cisco
- cpe:2.3:o:cisco:asa_5550_firmware:201.5\(23.16\):*:*:*:*:*:*:* Versions 201.5(23.16) Vulnerable ·Cisco
- cpe:2.3:h:cisco:asa_5550:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:asa_5555-x_firmware:9.12\(1.6\):*:*:*:*:*:*:* Versions 9.12(1.6) Vulnerable ·Cisco
- cpe:2.3:o:cisco:asa_5555-x_firmware:201.5\(23.16\):*:*:*:*:*:*:* Versions 201.5(23.16) Vulnerable ·Cisco
- cpe:2.3:h:cisco:asa_5555-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:asa_5580_firmware:9.12\(1.6\):*:*:*:*:*:*:* Versions 9.12(1.6) Vulnerable ·Cisco
- cpe:2.3:o:cisco:asa_5580_firmware:201.5\(23.16\):*:*:*:*:*:*:* Versions 201.5(23.16) Vulnerable ·Cisco
- cpe:2.3:h:cisco:asa_5580:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:asa_5585-x_firmware:9.12\(1.6\):*:*:*:*:*:*:* Versions 9.12(1.6) Vulnerable ·Cisco
- cpe:2.3:o:cisco:asa_5585-x_firmware:201.5\(23.16\):*:*:*:*:*:*:* Versions 201.5(23.16) Vulnerable ·Cisco
- cpe:2.3:h:cisco:asa_5585-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-3186
- 2026-10-03 Alias added: GHSA-h2j6-v888-8gxm
References
More Cisco Asa 5505 Firmware vulnerabilities
- TI-2020-02748 Path traversal in Cisco Adaptive Security Appliance Software CVSS 3.1CRITICAL 9.1
- TI-2021-17312 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL/TLS Denial of Service Vulnerability CVSS 3.1HIGH 8.6
- TI-2020-02841 Cisco Firepower 1000 Series SSL/TLS Denial of Service Vulnerability CVSS 3.1HIGH 8.6
- TI-2020-02757 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL/TLS Denial of Service Vulnerability CVSS 3.1HIGH 8.6
- TI-2020-02752 Improper input validation in Cisco Adaptive Security Appliance Software CVSS 3.1HIGH 8.6
- TI-2020-02750 Cisco Firepower Threat Defense Software VPN System Logging Denial of Service Vulnerability CVSS 3.1HIGH 8.6
Sources
- CVE-2020-3186 · CVE Program
- CVE-2020-3186 · NVD
- FIRST EPSS
- GHSA-h2j6-v888-8gxm · 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