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CVE-2026-8344— D-Link DIR-816 formDMZ.cgi sub_445E7C command injection

Quick assessment

Affected
D-Link DIR-816
Exploitation
High exploitation probability; assess promptly
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-816是中国友讯（D-Link）公司的一款无线路由器。 D-Link DIR-816 1.10CNB05_R1B011D88210版本存在注入漏洞，该漏洞源于/goform/formDMZ.cgi文件中sub_445E7C函数，可能导致命令注入。

CVSS 6.3 · Medium EPSS 4.97% · P92

Affected Version Matrix 1

VendorProduct Version RangeStatus
D-Link DIR-816 1.10CNB05_R1B011D88210 affected
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I. Basic Information for CVE-2026-8344

Vulnerability Information
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Vulnerability Title
D-Link DIR-816 formDMZ.cgi sub_445E7C command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A weakness has been identified in D-Link DIR-816 1.10CNB05_R1B011D88210. Affected by this vulnerability is the function sub_445E7C of the file /goform/formDMZ.cgi. This manipulation causes command injection. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
D-Link DIR-816 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
D-Link DIR-816是中国友讯（D-Link）公司的一款无线路由器。 D-Link DIR-816 1.10CNB05_R1B011D88210版本存在注入漏洞，该漏洞源于/goform/formDMZ.cgi文件中sub_445E7C函数，可能导致命令注入。
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-816 1.10CNB05_R1B011D88210 cpe:2.3:h:d-link:dir-816:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-8344

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III. Intelligence Information for CVE-2026-8344

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Vendor Pages for CVE-2026-8344 (1)

Other References for CVE-2026-8344 (1)

Same Patch Batch · D-Link · 2026-05-11 · 7 CVEs total

CVE-2026-8260 8.8 HIGH D-Link DCS-935L HNAP Service hnap_service SetDeviceSettings buffer overflow
CVE-2026-8346 6.3 MEDIUM D-Link DIR-816 portForward command injection
CVE-2026-8345 6.3 MEDIUM D-Link DIR-816 singlePortForward sub_445E7C command injection
CVE-2026-8273 4.7 MEDIUM D-Link DNS-320 system_mgr.cgi cgi_merge_user os command injection
CVE-2026-8272 4.7 MEDIUM D-Link DNS-320 webfile_mgr.cgi chown os command injection
CVE-2026-8271 4.7 MEDIUM D-Link DNS-320 network_mgr.cgi cgi_upnp_edit os command injection

IV. Related Vulnerabilities

Same product: DIR-816
Same vendor: D-Link
Same weakness: CWE-77

V. Comments for CVE-2026-8344

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