CVE-2021-1547

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

HIGH
7.2
CVSS Score
Published: May 22, 2021 at 06:45 AM UTC
Updated: June 17, 2026 at 03:32 AM UTC
13 products affected across 1 vendorWAP150 FirmwareWAP361 FirmwareWAP351 Firmware

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Severity
HIGH7.2
Exploit prediction
EPSS 2%
SSVC
No known exploit

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.

Affected

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

v ≤ 1.0.3.1
cisco-wap125 (same device)
v ≤ 1.0.2.17
cisco-wap131 (same device)
v ≤ 1.1.2.4
cisco-wap150 (same device)
v ≤ 1.0.2.17
cisco-wap351 (same device)
v ≤ 1.1.2.4
cisco-wap361 (same device)
v ≤ 1.0.3.1
cisco-wap581 (same device)
All versions
All versions
All versions

Remediation

No guide yet

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

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

Quick Info

StatusMODIFIED
CWE
CWE-77

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