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TI-2021-01280 Aliases CVE-2021-1555GHSA-4mcm-j783-v6p8

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

Priority LOW 35CWE-77Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-77.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0166 76th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco Business Wireless Access Point Softwareall versions—No fix listedCNA
  • Cisco Business Wireless Access Point Software VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 12

CPEVersionsRoleVendor
cpe:2.3:o:cisco:wap125_firmware:*:*:*:*:*:*:*:*up to 1.0.3.1VulnerableCisco
cpe:2.3:h:cisco:wap125:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:wap131_firmware:*:*:*:*:*:*:*:*up to 1.0.2.17VulnerableCisco
cpe:2.3:h:cisco:wap131:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:wap150_firmware:*:*:*:*:*:*:*:*up to 1.1.2.4VulnerableCisco
cpe:2.3:h:cisco:wap150:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:wap351_firmware:*:*:*:*:*:*:*:*up to 1.0.2.17VulnerableCisco
cpe:2.3:h:cisco:wap351:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:wap361_firmware:*:*:*:*:*:*:*:*up to 1.1.2.4VulnerableCisco
cpe:2.3:h:cisco:wap361:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
  • cpe:2.3:o:cisco:wap125_firmware:*:*:*:*:*:*:*:* Versions up to 1.0.3.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:wap125:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:wap131_firmware:*:*:*:*:*:*:*:* Versions up to 1.0.2.17 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:wap131:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:wap150_firmware:*:*:*:*:*:*:*:* Versions up to 1.1.2.4 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:wap150:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:wap351_firmware:*:*:*:*:*:*:*:* Versions up to 1.0.2.17 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:wap351:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:wap361_firmware:*:*:*:*:*:*:*:* Versions up to 1.1.2.4 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:wap361:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Show 2 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:cisco:wap581_firmware:*:*:*:*:*:*:*:*up to 1.0.3.1VulnerableCisco
cpe:2.3:h:cisco:wap581:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
  • cpe:2.3:o:cisco:wap581_firmware:*:*:*:*:*:*:*:* Versions up to 1.0.3.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:wap581:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Cisco Business Wireless Access Point Software — 20210519 Cisco Small Business 100, 300, and 500 Series Wireless Access Points Command Injection Vulnerabilities

    9 records Highest priority Priority LOW 9 LOW

    Other records, highest priority first

    • TI-2021-01279 Cisco Small Business 100, 300, and 500 Series Wireless Access Points Command Injection VulnerabilitiesPriority LOW 35
    • TI-2021-01278 Cisco Small Business 100, 300, and 500 Series Wireless Access Points Command Injection VulnerabilitiesPriority LOW 35
    • TI-2021-01277 Cisco Small Business 100, 300, and 500 Series Wireless Access Points Command Injection VulnerabilitiesPriority LOW 35
    Show all 9 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-1555
  2. 2026-10-03 Alias added: GHSA-4mcm-j783-v6p8

References

Advisory 1

  • TI-2021-01128 Cisco Small Business 100, 300, and 500 Series Wireless Access Points Vulnerabilities CVSS 3.1HIGH 8.8
  • TI-2021-01127 Cisco Small Business 100, 300, and 500 Series Wireless Access Points Vulnerabilities CVSS 3.1HIGH 8.8
  • TI-2021-01279 Cisco Small Business 100, 300, and 500 Series Wireless Access Points Command Injection Vulnerabilities CVSS 3.1HIGH 7.2
  • TI-2021-01278 Cisco Small Business 100, 300, and 500 Series Wireless Access Points Command Injection Vulnerabilities CVSS 3.1HIGH 7.2
  • TI-2021-01277 Cisco Small Business 100, 300, and 500 Series Wireless Access Points Command Injection Vulnerabilities CVSS 3.1HIGH 7.2
  • TI-2021-01276 Cisco Small Business 100, 300, and 500 Series Wireless Access Points Command Injection Vulnerabilities CVSS 3.1HIGH 7.2
See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences