CVE-2026-1685 MEDIUM

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

Vendor D-Link
Product DIR-823X
Weakness CWE-307 · Brute force
Published January 30, 2026
Last update February 23, 2026

CVSS base score

6.3/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS 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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

January 30, 2026 CVE published
February 23, 2026 Record updated