CVE-2020-3186: Cisco ASA 5505 Firmware
Medium severity, CVSS 5.3. EPSS: 1.4% chance of exploitation in the next 30 days.
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: version 9.12(1.6) only; version 201.5(23.16) only
- Cisco ASA 5510 Firmware: version 9.12(1.6) only; version 201.5(23.16) only
- Cisco ASA 5512-X Firmware: version 9.12(1.6) only; version 201.5(23.16) only
- Cisco ASA 5515-X Firmware: version 9.12(1.6) only; version 201.5(23.16) only
- Cisco ASA 5520 Firmware: version 9.12(1.6) only; version 201.5(23.16) only
- Cisco ASA 5525-X Firmware: version 9.12(1.6) only; version 201.5(23.16) only
- Cisco ASA 5540 Firmware: version 9.12(1.6) only; version 201.5(23.16) only
- Cisco ASA 5545-X Firmware: version 9.12(1.6) only; version 201.5(23.16) only
- Cisco ASA 5550 Firmware: version 9.12(1.6) only; version 201.5(23.16) only
- Cisco ASA 5555-X Firmware: version 9.12(1.6) only; version 201.5(23.16) only
- Cisco ASA 5580 Firmware: version 9.12(1.6) only; version 201.5(23.16) only
- Cisco ASA 5585-X Firmware: version 9.12(1.6) only; version 201.5(23.16) only
- Cisco Secure Firewall Threat Defense: from 6.3.0, before 6.3.0.6 (fixed in 6.3.0.6); from 6.4.0, before 6.4.0.7 (fixed in 6.4.0.7); from 6.5.0, before 6.5.0.2 (fixed in 6.5.0.2)
Published 2020-05-06. Last modified 2026-08-11.