Vulnerability Monitor

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CVE-2020-3559


A vulnerability in Cisco Aironet Access Point (AP) Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to improper handling of clients that are trying to connect to the AP. An attacker could exploit this vulnerability by sending authentication requests from multiple clients to an affected device. A successful exploit could allow the attacker to cause the affected device to reload.


Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.6, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 30 products from cisco, from cisco, from cisco and 27 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

2020-09-24T18:15:21.997

Last Modified

2024-11-21T05:31:18.883

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.6 (HIGH)

CVSSv2 Vector

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

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: COMPLETE
Exploitability Score

10.0

Impact Score

6.9

Weaknesses
  • Type: Secondary
    CWE-400
  • Type: Primary
    CWE-400

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco wireless_lan_controller < 8.10.112.0 Yes
Hardware cisco 1111-4pwe - No
Hardware cisco 1111-8plteeawb - No
Hardware cisco 1111-8pwb - No
Hardware cisco 1113-8plteeawe - No
Hardware cisco 1113-8pmwe - No
Hardware cisco 1113-8pwe - No
Hardware cisco 1116-4plteeawe - No
Hardware cisco 1116-4pwe - No
Hardware cisco 1117-4plteeawe - No
Hardware cisco 1117-4pmlteeawe - No
Hardware cisco 1117-4pmwe - No
Hardware cisco 1117-4pwe - No
Hardware cisco aironet_1815 - No
Hardware cisco aironet_1830e - No
Hardware cisco aironet_1830i - No
Hardware cisco aironet_1850e - No
Hardware cisco aironet_1850i - No
Hardware cisco business_140ac - No
Hardware cisco business_145ac - No
Hardware cisco business_240ac - No
Application cisco business_access_points < 10.1.1.0 Yes
Operating System cisco access_points < 16.12.4a Yes
Hardware cisco catalyst_9800-40 - No
Hardware cisco catalyst_9800-80 - No
Hardware cisco catalyst_9800-cl - No
Hardware cisco catalyst_9800-l - No
Hardware cisco catalyst_9800-l-c - No
Hardware cisco catalyst_9800-l-f - No
Application cisco aironet_access_point_software 8.5\(151.0\) Yes
Application cisco aironet_access_point_software 17.2.0.26 Yes
Hardware cisco aironet_1850e - No
Hardware cisco aironet_1850i - 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.