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CVE-2026-8273— D-Link DNS-320 system_mgr.cgi cgi_merge_user os command injection

Quick assessment

Affected
D-Link DNS-320
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 DNS-320是中国友讯（D-Link）公司的一款NAS（网络附属存储）设备。 D-Link DNS-320 2.06B01版本存在操作系统命令注入漏洞，该漏洞源于文件/cgi-bin/system_mgr.cgi中函数cgi_set_host/cgi_set_ntp/cgi_fan_control/cgi_merge_user可能导致OS命令注入。

CVSS 4.7 · Medium EPSS 6.07% · P93

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
D-Link DNS-320 2.06B01 affected
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I. Basic Information for CVE-2026-8273

Vulnerability Information
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Vulnerability Title
D-Link DNS-320 system_mgr.cgi cgi_merge_user os command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A weakness has been identified in D-Link DNS-320 2.06B01. This impacts the function cgi_set_host/cgi_set_ntp/cgi_fan_control/cgi_merge_user of the file /cgi-bin/system_mgr.cgi. This manipulation causes os command injection. It is possible to initiate the attack remotely.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
D-Link DNS-320 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
D-Link DNS-320是中国友讯（D-Link）公司的一款NAS（网络附属存储）设备。 D-Link DNS-320 2.06B01版本存在操作系统命令注入漏洞，该漏洞源于文件/cgi-bin/system_mgr.cgi中函数cgi_set_host/cgi_set_ntp/cgi_fan_control/cgi_merge_user可能导致OS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 DNS-320 2.06B01 -

II. Public POCs for CVE-2026-8273

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III. Intelligence Information for CVE-2026-8273

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Vendor Advisories for CVE-2026-8273 (2)

Proof of Concept for CVE-2026-8273 (1)

Vendor Pages for CVE-2026-8273 (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-2026-8344 6.3 MEDIUM D-Link DIR-816 formDMZ.cgi sub_445E7C 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: DNS-320
Same vendor: D-Link
Same weakness: CWE-78

V. Comments for CVE-2026-8273

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