CVE-2020-3186

Cisco Firepower Threat Defense Software Management Access List Bypass Vulnerability

MEDIUM
5.3
CVSS Score
Published: May 6, 2020 at 04:35 PM UTC
Updated: August 11, 2026 at 07:33 PM UTC
25 products affected across 1 vendorSecure Firewall Threat DefenseASA 5512-x FirmwareASA 5515-x Firmware

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Severity
MEDIUM5.3
Exploit prediction
EPSS 1%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

cisco-asa-5505 (same device)
cisco-asa-5510 (same device)
cisco-asa-5512-x (same device)
cisco-asa-5515-x (same device)
cisco-asa-5520 (same device)
cisco-asa-5525-x (same device)
cisco-asa-5540 (same device)
cisco-asa-5545-x (same device)
cisco-asa-5550 (same device)
cisco-asa-5555-x (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-284NVD-CWE-Other

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