CVE-2021-26810: dlink dir-816_firmware OS Command Injection

Vulnerability summary

CVE-2021-26810 is a high (CVSS 10.0) OS Command Injection vulnerability in dlink dir-816_firmware. EPSS estimates a 4.91% chance of exploitation in the next 30 days, higher than 92% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 30-03-2021
   PublishedVulnerability first disclosed.
2. 03-08-2024
   Last modifiedVulnerability information updated.

Description

D-link DIR-816 A2 v1.10 is affected by a remote code injection vulnerability. An HTTP request parameter can be used in command string construction in the handler function of the /goform/dir_setWanWifi, which can lead to command injection via shell metacharacters in the statuscheckpppoeuser parameter.

• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.