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CVE-2025-10666— D-Link DIR-825 apply.cgi sub_4106d4 buffer overflow

Quick assessment

Affected
D-Link DIR-825
Exploitation
Public or AI PoC available; prioritize validation
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-825是中国友讯（D-Link）公司的一款路由器。 D-Link DIR-825 2.10及之前版本存在安全漏洞，该漏洞源于文件apply.cgi中函数sub_4106d4对参数countdown_time的错误操作，可能导致缓冲区溢出。

CVSS 8.8 · High EPSS 3.30% · P88

Public Exploits 1

ExploitDB · 1 EDB-52469 [hardware]

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-10666

Vulnerability Information
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Vulnerability Title
D-Link DIR-825 apply.cgi sub_4106d4 buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in D-Link DIR-825 up to 2.10. Affected by this vulnerability is the function sub_4106d4 of the file apply.cgi. The manipulation of the argument countdown_time results in buffer overflow. The attack can be executed remotely. The exploit has been released to the public and may be exploited. This vulnerability only affects products that are no longer supported by the maintainer.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
D-Link DIR-825 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
D-Link DIR-825是中国友讯（D-Link）公司的一款路由器。 D-Link DIR-825 2.10及之前版本存在安全漏洞，该漏洞源于文件apply.cgi中函数sub_4106d4对参数countdown_time的错误操作，可能导致缓冲区溢出。
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

Vendor Product Affected Versions CPE Subscribe
D-Link DIR-825 2.0 -

II. Public POCs for CVE-2025-10666

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8646 chars
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III. Intelligence Information for CVE-2025-10666

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Proof of Concept for CVE-2025-10666 (2)

Vendor Pages for CVE-2025-10666 (1)

Same Patch Batch · D-Link · 2025-09-18 · 5 CVEs total

CVE-2025-10628 6.3 MEDIUM D-Link DIR-852 Web Management hedwig.cgi command injection
CVE-2025-10629 6.3 MEDIUM D-Link DIR-852 Simple Service Discovery Protocol Service cgibin ssdpcgi_main command injec
CVE-2025-10634 6.3 MEDIUM D-Link DIR-823X Environment Variable goahead sub_412E7C command injection
CVE-2025-10689 6.3 MEDIUM D-Link DIR-645 soap.cgi soapcgi_main command injection

IV. Related Vulnerabilities

Same product: DIR-825
Same vendor: D-Link
Same weakness: CWE-120

V. Comments for CVE-2025-10666

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