CVE-2026-7851— D-Link DI-8100 yyxz.asp sprintf stack-based overflow
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I. Basic Information for CVE-2026-7851
Vulnerability Information
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Vulnerability Title
D-Link DI-8100 yyxz.asp sprintf stack-based overflow
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was identified in D-Link DI-8100 16.07.26A1. This affects the function sprintf of the file yyxz.asp. The manipulation of the argument ID leads to stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is publicly available and might be used.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
栈缓冲区溢出
Source: NVD (National Vulnerability Database)
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，该漏洞源于文件yyxz.asp中函数sprintf对参数ID的操作导致栈缓冲区溢出，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
II. Public POCs for CVE-2026-7851
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
Qwen3.6-35B-A3B · 7629 chars
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III. Intelligence Information for CVE-2026-7851
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- CVE-2026-7851 | D-Link DI-8100 16.07.26A1 yyxz.asp sprintf ID stack-based overflowvdb-entrytechnical-description
- https://nvd.nist.gov/vuln/detail/CVE-2026-7851
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-2026-7856 | 7.2 HIGH | D-Link DI-8100 Web Management url_member.asp buffer overflow |
IV. Related Vulnerabilities
Same product: DI-8100
- CVE-2026-7857
D-Link DI-8100 CGI user_group.asp sprintf buffer overflow - CVE-2026-7856
D-Link DI-8100 Web Management url_member.asp buffer overflow - CVE-2026-7855
D-Link DI-8100 HTTP Request tggl.asp tggl_asp buffer overflo - CVE-2026-7854
D-Link DI-8100 POST Parameter url_rule.asp url_rule_asp buff - CVE-2026-7853
D-Link DI-8100 HTTP auto_reboot.asp sprintf buffer overflow
Same vendor: D-Link
- CVE-2026-8273
D-Link DNS-320 system_mgr.cgi cgi_merge_user os command inje - CVE-2026-8272
D-Link DNS-320 webfile_mgr.cgi chown os command injection - CVE-2026-8271
D-Link DNS-320 network_mgr.cgi cgi_upnp_edit os command inje - CVE-2026-8260
D-Link DCS-935L HNAP Service hnap_service SetDeviceSettings - CVE-2026-7857
D-Link DI-8100 CGI user_group.asp sprintf buffer overflow
Same weakness: CWE-121
- CVE-2026-8258
Squirrel sqstdstring.cpp validate_format stack-based overflo - CVE-2026-8234
EFM ipTIME A8004T WifiBasicSet formWifiBasicSet stack-based - CVE-2026-6665
PgBouncer buffer overflow in SCRAM - CVE-2026-41509
Integer underflow in crypto_sign_open() leads to buffer over - CVE-2026-8138
Tenda CX12L SetPptpServerCfg” formSetPPTPServer stack-based
V. Comments for CVE-2026-7851
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