CVE-2021-27249

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-04-14 · updated 2026-06-17
Weakness: CWE-78

Description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2020 v1.01rc001 Wi-Fi access points. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of CGI scripts. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11369.

Affected products

D-Link DAP-2020: 1.01-rc001

References

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201
https://www.zerodayinitiative.com/advisories/ZDI-21-204/
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201
https://www.zerodayinitiative.com/advisories/ZDI-21-204/

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