CVE-2026-7247— D-Link DI-8100 File Extension file_exten.asp file_exten_asp buffer overflow
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I. Basic Information for CVE-2026-7247
Vulnerability Information
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Vulnerability Title
D-Link DI-8100 File Extension file_exten.asp file_exten_asp buffer overflow
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability has been found in D-Link DI-8100 16.07.26A1. Affected by this issue is the function file_exten_asp of the file file_exten.asp of the component File Extension Handler. The manipulation of the argument Name leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may 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
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
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File Extension Handler组件中file_exten.asp文件的file_exten_asp函数对参数Name的操作，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
II. Public POCs for CVE-2026-7247
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- Submit #802868: D-Link DI-8100 16.07.26A1 Denial of Servicethird-party-advisory
- CVE-2026-7247 | D-Link DI-8100 16.07.26A1 File Extension file_exten.asp file_exten_asp Name buffer overflowvdb-entrytechnical-description
- https://nvd.nist.gov/vuln/detail/CVE-2026-7247
Same Patch Batch · D-Link · 2026-04-28 · 4 CVEs total
| CVE-2026-7248 | 9.8 CRITICAL | D-Link DI-8100 CGI Endpoint tgfile.htm tgfile_htm buffer overflow |
| CVE-2026-7288 | 8.8 HIGH | D-Link DIR-825M formVpnConfigSetup sub_4151FC buffer overflow |
| CVE-2026-7289 | 8.8 HIGH | D-Link DIR-825M formWanConfigSetup sub_414BA8 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-120
- CVE-2026-8260
D-Link DCS-935L HNAP Service hnap_service SetDeviceSettings - CVE-2026-8137
Totolink X5000R formDdns sub_458E40 buffer overflow - CVE-2026-6691
MongoDB C Driver Cyrus SASL Canonicalization Buffer Overflow - 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
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