CVE-2021-39510
highpriority · track · 42EPSS 0.086 · 95 %ileEUUSEPSS · scored 2026-10-27
An issue was discovered in D-Link DIR816_A1_FW101CNB04 750m11ac wireless router, 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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
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references (9)
External citations — patches, advisories, analysis.
- https://github.com/doudoudedi/main-DIR-816_A1_Command-injection/blob/main/injection_A1.mdcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2021-39510cnnvd
- https://www.dlink.com/en/security-bulletin/cnnvd
- https://github.com/doudoudedi/main-DIR-816_A1_Command-injectionenisa_euvd
- https://github.com/doudoudedi/main-DIR-816_A1_Command-injection/blob/main/injection_A1.mdenisa_euvd
- https://www.dlink.com/en/security-bulletin/enisa_euvd
- https://github.com/doudoudedi/main-DIR-816_A1_Command-injectionThird Party Advisorynvd
- https://github.com/doudoudedi/main-DIR-816_A1_Command-injection/blob/main/injection_A1.mdExploitThird Party Advisorynvd
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