CVE-2026-1685— D-Link DIR-823X Login sub_40AC74 excessive authentication
Quick assessment
Affected
D-Link DIR-823X
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
D-Link DIR-823X是中国友讯（D-Link）公司的一款无线路由器。 D-Link DIR-823X 250416版本存在安全漏洞，该漏洞源于Login组件中sub_40AC74函数存在身份验证尝试限制不当，可能导致暴力破解攻击。
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I. Basic Information for CVE-2026-1685
Vulnerability Information
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Vulnerability Title
D-Link DIR-823X Login sub_40AC74 excessive authentication
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
过多认证尝试的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
D-Link DIR-823X 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
D-Link DIR-823X是中国友讯（D-Link）公司的一款无线路由器。 D-Link DIR-823X 250416版本存在安全漏洞，该漏洞源于Login组件中sub_40AC74函数存在身份验证尝试限制不当，可能导致暴力破解攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-1685
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Vendor Pages for CVE-2026-1685 (1)
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V. Comments for CVE-2026-1685
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