CVE-2022-43621

Name: CVE-2022-43621
Creator: NVD / NIST
Published: 2023-03-29T19:15:19.27+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 2.17%

Last modified Jun 17, 2026

CVE-2022-43621 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-1935 1.03 routers. Authentication is not required to exploit this vulnerability. EPSS estimates a 2.17% chance of exploitation in the next 30 days.

Description

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-1935 1.03 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HNAP login requests. The issue results from an incorrectly implemented comparison. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-16152.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

2.17%

80.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-697

Affected Software

Vendor	Product	Versions	Update
Dlink	Dir-1935 Firmware	<= 1.02	—
Dlink	Dir-1935 Firmware	1.03	B1

References

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10310Patch, Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-1503/Third Party Advisory, VDB Entry
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10310Patch, Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-1503/Third Party Advisory, VDB Entry

Timeline

Published: Mar 29, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-43621?

How severe is CVE-2022-43621?

CVE-2022-43621 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.17% probability of exploitation in the next 30 days.

How do I fix CVE-2022-43621?

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-2022-43621?

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

Scan your code now

Source: NVD / NIST