CVE-2021-27249

8.8 highEPSS 5.1%

High (8.8) in dlink dap-2020 firmware. EPSS 5.1% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

8.8 high

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 5.1% chance of exploitation in the next 30 days; higher than 92% of CVEs (scores of 2026-10-31)
CWE: CWE-78
Published: 2021-04-14
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

dlink:dap-2020_firmware

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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