D-Link DIR-823X 250416 Login sub_40AC74 excessive authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability has been found in D-Link DIR-823X 250416 and classified as problematic. This issue affects the function sub_40AC74 of the component Login. Performing a manipulation results in excessive authentication. This vulnerability is cataloged as CVE-2026-1685. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Detailsinfo

A vulnerability, which was classified as problematic, was found in D-Link DIR-823X 250416. This affects the function sub_40AC74 of the component Login. The manipulation with an unknown input leads to a excessive authentication vulnerability. CWE is classifying the issue as CWE-307. The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame, making it more susceptible to brute force attacks. This is going to have an impact on confidentiality.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-1685. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known. The attack technique deployed by this issue is T1110.001 according to MITRE ATT&CK.

The exploit is shared for download at github.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.7
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔒

CNA Base Score: 3.7
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Excessive authentication
CWE: CWE-307 / CWE-799 / CWE-400
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

01/30/2026 Advisory disclosed
01/30/2026 +0 days VulDB entry created
02/20/2026 +21 days VulDB entry last update

Sourcesinfo

Vendor: dlink.com

Advisory: github.com
Status: Not defined

CVE: CVE-2026-1685 (🔒)
GCVE (CVE): GCVE-0-2026-1685
GCVE (VulDB): GCVE-100-343479
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 01/30/2026 08:45 AM
Updated: 02/20/2026 05:25 PM
Changes: 01/30/2026 08:45 AM (56), 01/31/2026 10:40 AM (30), 02/20/2026 05:25 PM (11)
Complete: 🔍
Submitter: 942384053
Cache ID: 244:6DC:40

Submitinfo

Accepted

  • Submit #740886: D-Link dir-823X 250416 A logical flaw in the authentication mechanism exists (by 942384053)

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