cvedb.io
CVE-2021-34861
HIGH · CVSS 8.8
EPSS exploitation probability: 0%
Published 2021-10-25T17:15:08.477 · Last modified 2026-06-17T03:56:41.920

Summary

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2020 1.01rc001 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the webproc endpoint, which listens on TCP port 80 by default. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-12104.

Affected products

dlink — dap-2020_firmware

Does this affect you?

Add your gear to cvedb and we'll alert you only when dlink ships something exploited.

Check my exposure →

References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.