Low 3.7Published Jan 30, 2026

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

Updated under an hour ago (Oct 25, 2026, 10:30 PM ET)

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It affects D-Link DIR-823X and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for D-Link DIR-823X

Exploited in the last 30 days

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.

CVSS: 3.7 LOW (v3.1, CNA)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
Weakness (CWE): CWE-307, CWE-799
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Analyzed
Record last updated: Feb 23, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

D-Link DIR-823X d_link:dir_823x (from the name)	250416	CNA record
dlink dir-823x_firmware dlink:dir-823x_firmware	250416	NVD

References

https://vuldb.com/?id.343479vdb-entry, technical-description, third-party-advisory
https://vuldb.com/?ctiid.343479signature, permissions-required, vdb-entry
https://vuldb.com/?submit.740886third-party-advisory, vdb-entry
https://github.com/master-abc/cve/issues/17exploit, issue-tracking
https://www.dlink.com/product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.