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Vulnerability record · CVE-2021-34860 · published 25 October 2021

CVE-2021-34860: Dlink dap-2020 firmware path traversal vulnerability

Dlink · Dap 2020 Firmware

This vulnerability allows network-adjacent attackers to disclose sensitive information 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 handling of the getpage parameter provided to the webproc endpoint. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose information in the context of root. Was ZDI-CAN-12103.

6.5 CVSS 3.1 Medium EPSS 1.5% · top 27.4% CWE-22 · Path traversal
6.5CVSS 3.1 base score, v2 3.3
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

This vulnerability allows network-adjacent attackers to disclose sensitive information 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 handling of the getpage parameter provided to the webproc endpoint. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose information in the context of root. Was ZDI-CAN-12103.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201 PatchVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-976/ Third Party AdvisoryVDB Entry
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201 PatchVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-976/ Third Party AdvisoryVDB Entry

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Source: NIST National Vulnerability Database (record CVE-2021-34860), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.