A vulnerability was identified in D-Link DIR-823X 250416. This vulnerability affects the function sub_40AC74 of the component Login. Such manipulation leads to improper restriction of excessive authentication attempts. The attack may be performed from remote. This attack is characterized by high complexity. It is stated that the exploitability is difficult. The exploit is publicly available and might be used.

Attack Vector Network

Attack Complexity High

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

Access Vector Network

Access Complexity High

Authentication None

Confidentiality Impact Partial

Integrity Impact None

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.00133.

Exploitation poc

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
D-Link DIR-823X affected
Version Status Constraints
250416 affected —

Configuration 1 [-]

AND
cpe:2.3:o:dlink:dir-823x_firmware:250416:*:*:*:*:*:*:*
cpe:2.3:h:dlink:dir-823x:-:*:*:*:*:*:*:*

No data.

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/master-abc/cve/issues/17 cve-icon cve-icon
https://vuldb.com/?ctiid.343479 cve-icon cve-icon
https://vuldb.com/?id.343479 cve-icon cve-icon
https://vuldb.com/?submit.740886 cve-icon cve-icon
https://www.dlink.com/ cve-icon cve-icon
History

Fri, 20 Feb 2026 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Dlink
Dlink dir-823x
Dlink dir-823x Firmware
CPEs cpe:2.3:h:dlink:dir-823x:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dir-823x_firmware:250416:*:*:*:*:*:*:*
Vendors & Products Dlink
Dlink dir-823x
Dlink dir-823x Firmware

Tue, 03 Feb 2026 15:00:00 +0000

Type Values Removed Values Added
First Time appeared D-link
D-link dir-823x
Vendors & Products D-link
D-link dir-823x

Fri, 30 Jan 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 30 Jan 2026 14:45:00 +0000

Type Values Removed Values Added
Description A vulnerability was identified in D-Link DIR-823X 250416. This vulnerability affects the function sub_40AC74 of the component Login. Such manipulation leads to improper restriction of excessive authentication attempts. The attack may be performed from remote. This attack is characterized by high complexity. It is stated that the exploitability is difficult. The exploit is publicly available and might be used.
Title D-Link DIR-823X Login sub_40AC74 excessive authentication
Weaknesses CWE-307
CWE-799
References
Metrics cvssV2_0

{'score': 2.6, 'vector': 'AV:N/AC:H/Au:N/C:P/I:N/A:N/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 3.7, 'vector': 'CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-01-30T14:55:54.845Z

Reserved: 2026-01-30T07:40:40.236Z

Link: CVE-2026-1685

cve-icon Vulnrichment

Updated: 2026-01-30T14:55:38.484Z

cve-icon NVD

Status : Analyzed

Published: 2026-01-30T15:16:08.973

Modified: 2026-02-20T15:45:13.577

Link: CVE-2026-1685

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-02T09:27:34Z

Weaknesses