Vulnerability Database

314,433

Total vulnerabilities in the database

CVE-2021-39509

An issue was discovered in D-Link DIR-816 DIR-816A2_FWv1.10CNB05_R1B011D88210 The HTTP request parameter is used in the handler function of /goform/form2userconfig.cgi route, which can construct the user name string to delete the user function. This can lead to command injection through shell metacharacters.

  • Published: Aug 24, 2021
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-39509
  • Severity: Critical
  • Exploit:

CVSS v3:

  • Severity: Critical
  • Score: 9.8
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/Au:N/C:P/I:P/A:P

CWEs:

OWASP TOP 10:

Software From Fixed in
dlink / dir-816_firmware 1.10cnb05_r1b011d88210 1.10cnb05_r1b011d88210.x