CVE-2021-34860

Name: CVE-2021-34860
Creator: NVD / NIST
Published: 2021-10-25T17:15:08.417+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.41%

Last modified Jun 17, 2026

CVE-2021-34860 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 1.41% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.41%

69.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Dlink	Dap-2020 Firmware	<= 1.01

References

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201Patch, Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-976/Third Party Advisory, VDB Entry
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201Patch, Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-976/Third Party Advisory, VDB Entry

Timeline

Published: Oct 25, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-34860?

How severe is CVE-2021-34860?

CVE-2021-34860 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.41% probability of exploitation in the next 30 days.

How do I fix CVE-2021-34860?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-34860?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST