CVE-2026-1685: D-Link DIR-823X Login sub_40AC74 excessive authentication

Published Jan 30, 2026
·
Updated

A vulnerability was identified in D-Link DIR-823X 250416. This vulnerability affects the function sub40AC74 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.

Affected Software

3 affected components
D-Link DIR-823X=250416
All of the following
Dlink Dir-823x Firmware=250416
Dlink Dir-823x

Event History

Jan 30, 2026
CVE Published
via MITRE·02:32 PM
Data Sourced
via MITRE·02:32 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·03:16 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2026-1685?

The severity of CVE-2026-1685 is classified as high due to the potential for unauthorized access through excessive authentication attempts.

2

How do I fix CVE-2026-1685?

To fix CVE-2026-1685, update your D-Link DIR-823X firmware to the latest version released by the vendor.

3

What are the potential impacts of CVE-2026-1685?

The potential impacts of CVE-2026-1685 include unauthorized access to the device and related network services due to excessive authentication attempts.

4

Which devices are affected by CVE-2026-1685?

CVE-2026-1685 affects the D-Link DIR-823X router specifically version 250416.

5

Is CVE-2026-1685 actively exploited in the wild?

As of the latest information, there is no indication that CVE-2026-1685 is actively exploited in the wild, but it remains a significant vulnerability.

Contact

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