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Vulnerability record · CVE-2023-51987 · published 11 January 2024

CVE-2023-51987: Dlink dir-822 firmware missing authentication for critical function vulnerability

Dlink · Dir 822 Firmware

D-Link DIR-822+ V1.0.2 contains a login bypass in the HNAP1 interface, which allows attackers to log in to administrator accounts with empty passwords.

9.8 CVSS 3.1 Critical EPSS 0.92% · top 41.4% CWE-306 · Missing authentication for critical function
9.8CVSS 3.1 base score
0.92%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

D-Link DIR-822+ V1.0.2 contains a login bypass in the HNAP1 interface, which allows attackers to log in to administrator accounts with empty passwords.

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

Affected products

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

References

LinkTags
https://github.com/funny-mud-peee/IoT-vuls/tree/main/dir822%2B/2 ExploitThird Party Advisory
https://github.com/funny-mud-peee/IoT-vuls/tree/main/dir822%2B/2 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2019-17621D-Link DIR-859 UPnP gena.cgi unauthenticated command injectionThe UPnP endpoint /gena.cgi on D-Link DIR-859 firmware 1.05 and 1.06B01 Beta01 fails to sanitize input in an HTTP SUBSCRIBE request, allowing OS comm…KEVEPSS 90%analysed9.8CVE-2023-51984Dlink dir-822 firmware os command injection vulnerabilityD-Link DIR-822+ V1.0.2 was found to contain a command injection in SetStaticRouteSettings function. allows remote attackers to execute arbitrary comm…EPSS 2.0%9.8CVE-2018-19987D-link dir-818lw firmware os command injection vulnerabilityD-Link DIR-822 Rev.B 202KRb06, DIR-822 Rev.C 3.10B06, DIR-860L Rev.B 2.03.B03, DIR-868L Rev.B 2.05B02, DIR-880L Rev.A 1.20B01_01_i3se_BETA, and DIR-8…EPSS 13%9.8CVE-2018-19989D-link dir-822 firmware os command injection vulnerabilityIn the /HNAP1/SetQoSSettings message, the uplink parameter is vulnerable, and the vulnerability affects D-Link DIR-822 Rev.B 202KRb06 and DIR-822 Rev…EPSS 5.5%9.8CVE-2018-20675Dlink dir-822 firmware improper authentication vulnerabilityD-Link DIR-822 C1 before v3.11B01Beta, DIR-822-US C1 before v3.11B01Beta, DIR-850L A* before v1.21B08Beta, DIR-850L B* before v2.22B03Beta, and DIR-8…EPSS 1.8%9.8CVE-2016-6563D-Link DIR routers stack buffer overflow via HNAP SOAP loginMalformed SOAP messages sent to the HNAP Login action overflow a stack buffer in several D-Link DIR router models. The vulnerable XML fields are Acti…EPSS 80%analysed9.8CVE-2016-5681Dlink dir-868l firmware memory buffer overflow vulnerabilityStack-based buffer overflow in dws/api/Login on D-Link DIR-850L B1 2.07 before 2.07WWB05, DIR-817 Ax, DIR-818LW Bx before 2.05b03beta03, DIR-822 C1 3…EPSS 12%8.8CVE-2018-20674Dlink dir-822 firmware vulnerabilityD-Link DIR-822 C1 before v3.11B01Beta, DIR-822-US C1 before v3.11B01Beta, DIR-850L A* before v1.21B08Beta, DIR-850L B* before v2.22B03Beta, and DIR-8…EPSS 2.5%

Source: NIST National Vulnerability Database (record CVE-2023-51987), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.