Vulnerability Monitor

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CVE-2020-3166

A vulnerability in the CLI of Cisco FXOS Software could allow an authenticated, local attacker to read or write arbitrary files on the underlying operating system (OS). The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by including crafted arguments to a specific CLI command. A successful exploit could allow the attacker to read or write to arbitrary files on the underlying OS.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.7, requiring local system access to exploit with relatively low complexity without requiring user interaction . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 19 products from cisco, from cisco, from cisco and 16 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2020-02-26T17:15:12.767

Last Modified

2024-11-21T05:30:27.887

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.7 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:P/I:P/A:P

  • Access Vector: LOCAL
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

3.9

Impact Score

6.4

Weaknesses
  • Type: Secondary
    CWE-20
  • Type: Primary
    CWE-20
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application cisco firepower_threat_defense < 6.2.3.16 Yes
Application cisco firepower_threat_defense < 6.5.0.3 Yes
Operating System cisco adaptive_security_appliance_software < 9.9.2.66 Yes
Operating System cisco adaptive_security_appliance_software < 9.13.1.5 Yes
Hardware cisco firepower_1010 - No
Hardware cisco firepower_1120 - No
Hardware cisco firepower_1140 - No
Hardware cisco firepower_1150 - No
Hardware cisco firepower_2110 - No
Hardware cisco firepower_2120 - No
Hardware cisco firepower_2130 - No
Hardware cisco firepower_2140 - No
Operating System cisco firepower_extensible_operating_system < 2.2.2.97 Yes
Operating System cisco firepower_extensible_operating_system < 2.3.1.155 Yes
Operating System cisco firepower_extensible_operating_system < 2.4.1.238 Yes
Operating System cisco firepower_extensible_operating_system < 2.6.1.157 Yes
Hardware cisco firepower_4110 - No
Hardware cisco firepower_4115 - No
Hardware cisco firepower_4120 - No
Hardware cisco firepower_4125 - No
Hardware cisco firepower_4140 - No
Hardware cisco firepower_4145 - No
Hardware cisco firepower_4150 - No
Hardware cisco firepower_9300 - No
References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.