What’s Vulnerable › Vulnerabilities
CVE-2020-3186: Cisco Firepower Threat Defense Software Management Access List Bypass Vulnerability
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-05-06 · updated 2026-08-11
- Weakness: CWE-284
Description
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.
Affected products
- Cisco Asa 5505 Firmware: 9.12(1.6), 201.5(23.16)
- Cisco Asa 5510 Firmware: 9.12(1.6), 201.5(23.16)
- Cisco Asa 5512-X Firmware: 9.12(1.6), 201.5(23.16)
- Cisco Asa 5515-X Firmware: 9.12(1.6), 201.5(23.16)
- Cisco Asa 5520 Firmware: 9.12(1.6), 201.5(23.16)
- Cisco Asa 5525-X Firmware: 9.12(1.6), 201.5(23.16)
- Cisco Asa 5540 Firmware: 9.12(1.6), 201.5(23.16)
- Cisco Asa 5545-X Firmware: 9.12(1.6), 201.5(23.16)
- Cisco Asa 5550 Firmware: 9.12(1.6), 201.5(23.16)
- Cisco Asa 5555-X Firmware: 9.12(1.6), 201.5(23.16)
- Cisco Asa 5580 Firmware: 9.12(1.6), 201.5(23.16)
- Cisco Asa 5585-X Firmware: 9.12(1.6), 201.5(23.16)
- Cisco Firepower Threat Defense Software: from 6.3.0 before 6.3.0.6; from 6.4.0 before 6.4.0.7; from 6.5.0 before 6.5.0.2 — fixed in 6.3.0.6, 6.4.0.7, 6.5.0.2
How to fix
Upgrade to a fixed version: Cisco Firepower Threat Defense Software 6.3.0.6, 6.4.0.7, 6.5.0.2. Check the vendor advisory for mitigations.
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-accesslist-bypass-5dZs5qZp
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-accesslist-bypass-5dZs5qZp
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