VYPR
Unrated severityNVD Advisory· Published May 22, 2021· Updated Nov 8, 2024

Cisco Small Business 100, 300, and 500 Series Wireless Access Points Command Injection Vulnerabilities

CVE-2021-1555

Description

Multiple vulnerabilities in the web-based management interface of certain Cisco Small Business 100, 300, and 500 Series Wireless Access Points could allow an authenticated, remote attacker to perform command injection attacks against an affected device. These vulnerabilities are due to improper validation of user-supplied input. An attacker could exploit these vulnerabilities by sending crafted HTTP requests to the web-based management interface of an affected system. A successful exploit could allow the attacker to execute arbitrary commands with root privileges on the device. To exploit these vulnerabilities, the attacker must have valid administrative credentials for the device.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Authenticated command injection in Cisco Small Business 100, 300, and 500 Series Wireless Access Points allows arbitrary command execution with root privileges.

Vulnerability

The vulnerability exists in the web-based management interface of certain Cisco Small Business 100, 300, and 500 Series Wireless Access Points. It is due to improper validation of user-supplied input. Affected products include WAP125, WAP150, WAP361, and WAP581 devices. The WAP121, WAP131, WAP321, and WAP351 models are end-of-life and will not receive fixes. [1]

Exploitation

An attacker must have valid administrative credentials for the device. The attacker exploits the vulnerability by sending crafted HTTP requests to the web-based management interface. No user interaction or additional network position beyond remote access is required. [1]

Impact

Successful exploitation allows the attacker to execute arbitrary commands with root privileges on the affected device. This provides full control over the access point, potentially leading to data disclosure, denial of service, or use as a pivot point in the network. [1]

Mitigation

Fixed releases: WAP125 version 1.0.4.3, WAP150 version 1.1.3.2, WAP361 version 1.1.3.2, and WAP581 version 1.0.4.4. For WAP121, WAP131, WAP321, and WAP351, no fix is available as these products have entered the end-of-life process; customers are advised to migrate to supported models. [1]

AI Insight generated on May 26, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.

Affected products

2

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

1

News mentions

0

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