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

Severity: medium (CVSS 5.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-01-30 · updated 2026-06-17
Weakness: CWE-307

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.

Affected products

D-Link DIR-823X: 250416

References

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

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