CVE-2026-1685
D-Link DIR-823X Login sub_40AC74 excessive authentication
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.
INFO
Published Date :
Jan. 30, 2026, 3:16 p.m.
Last Modified :
Feb. 20, 2026, 3:45 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-1685
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | LOW | [email protected] | ||||
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Apply security patches for the affected component.
- Update the device firmware to the latest version.
- Implement rate limiting for authentication attempts.
- Monitor authentication logs for suspicious activity.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-1685.
| URL | Resource |
|---|---|
| https://github.com/master-abc/cve/issues/17 | Issue Tracking |
| https://vuldb.com/?ctiid.343479 | Permissions Required VDB Entry |
| https://vuldb.com/?id.343479 | Third Party Advisory VDB Entry |
| https://vuldb.com/?submit.740886 | Third Party Advisory VDB Entry |
| https://www.dlink.com/ | Product |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-1685 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-1685
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-1685 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-1685 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 20, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Added CPE Configuration AND OR *cpe:2.3:o:dlink:dir-823x_firmware:250416:*:*:*:*:*:*:* OR cpe:2.3:h:dlink:dir-823x:-:*:*:*:*:*:*:* Added Reference Type VulDB: https://github.com/master-abc/cve/issues/17 Types: Issue Tracking Added Reference Type VulDB: https://vuldb.com/?ctiid.343479 Types: Permissions Required, VDB Entry Added Reference Type VulDB: https://vuldb.com/?id.343479 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/?submit.740886 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://www.dlink.com/ Types: Product -
New CVE Received by [email protected]
Jan. 30, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Added CVSS V2 (AV:N/AC:H/Au:N/C:P/I:N/A:N) Added CWE CWE-307 Added CWE CWE-799 Added Reference https://github.com/master-abc/cve/issues/17 Added Reference https://vuldb.com/?ctiid.343479 Added Reference https://vuldb.com/?id.343479 Added Reference https://vuldb.com/?submit.740886 Added Reference https://www.dlink.com/