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CVE-2026-7856— D-Link DI-8100 Web Management url_member.asp buffer overflow

Quick assessment

Affected
D-Link DI-8100
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 DI-8100是中国友讯（D-Link）公司的一款专为中小型网络环境设计的无线宽带路由器。 D-Link DI-8100 16.07.26A1版本存在缓冲区错误漏洞，该漏洞源于Web Management Interface组件中文件/url_member.asp对参数Name的操作导致缓冲区溢出，可能导致远程攻击。

CVSS 7.2 · High EPSS 4.59% · P91

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
D-Link DI-8100 16.07.26A1 affected
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I. Basic Information for CVE-2026-7856

Vulnerability Information
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Vulnerability Title
D-Link DI-8100 Web Management url_member.asp buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in D-Link DI-8100 16.07.26A1. This affects an unknown part of the file /url_member.asp of the component Web Management Interface. Executing a manipulation of the argument Name can lead to buffer overflow. The attack can be launched remotely. The exploit has been published and may be used.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/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 DI-8100 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
D-Link DI-8100是中国友讯（D-Link）公司的一款专为中小型网络环境设计的无线宽带路由器。 D-Link DI-8100 16.07.26A1版本存在缓冲区错误漏洞，该漏洞源于Web Management Interface组件中文件/url_member.asp对参数Name的操作导致缓冲区溢出，可能导致远程攻击。
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

Vendor Product Affected Versions CPE Subscribe
D-Link DI-8100 16.07.26A1 -

II. Public POCs for CVE-2026-7856

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Qwen3.6-35B-A3B · 8825 chars
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III. Intelligence Information for CVE-2026-7856

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Vendor Pages for CVE-2026-7856 (1)

Other References for CVE-2026-7856 (1)

Same Patch Batch · D-Link · 2026-05-05 · 6 CVEs total

CVE-2026-7854 9.8 CRITICAL D-Link DI-8100 POST Parameter url_rule.asp url_rule_asp buffer overflow
CVE-2026-7853 9.8 CRITICAL D-Link DI-8100 HTTP auto_reboot.asp sprintf buffer overflow
CVE-2026-7855 8.8 HIGH D-Link DI-8100 HTTP Request tggl.asp tggl_asp buffer overflow
CVE-2026-7857 7.2 HIGH D-Link DI-8100 CGI user_group.asp sprintf buffer overflow
CVE-2026-7851 7.2 HIGH D-Link DI-8100 yyxz.asp sprintf stack-based overflow

IV. Related Vulnerabilities

Same product: DI-8100
Same vendor: D-Link
Same weakness: CWE-120

V. Comments for CVE-2026-7856

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