CVE-2022-43621

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-03-29 · updated 2026-06-17
Weakness: CWE-697

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.

Affected products

D-Link DIR-1935: through 1.02; 1.03-b1, 1.03-b2

References

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10310
https://www.zerodayinitiative.com/advisories/ZDI-22-1503/
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10310
https://www.zerodayinitiative.com/advisories/ZDI-22-1503/

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