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CVE-2026-5844— D-Link DIR-882 HNAP1 SetNetworkSettings prog.cgi sprintf os command injection

Quick assessment

Affected
D-Link DIR-882
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-882是中国友讯（D-Link）公司的一款双频无线路由器。 D-Link DIR-882 1.01B02版本存在操作系统命令注入漏洞，该漏洞源于HNAP1 SetNetworkSettings Handler组件中prog.cgi文件sprintf函数对参数IPAddress的错误操作，可能导致os命令注入攻击。

CVSS 7.2 · High EPSS 6.17% · P93

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-5844

Vulnerability Information
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Vulnerability Title
D-Link DIR-882 HNAP1 SetNetworkSettings prog.cgi sprintf os command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in D-Link DIR-882 1.01B02. Impacted is the function sprintf of the file prog.cgi of the component HNAP1 SetNetworkSettings Handler. The manipulation of the argument IPAddress results in os command injection. The attack may be performed from remote. The exploit has been made public and could be used. This vulnerability only affects products that are no longer supported by the maintainer.
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
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 DIR-882 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
D-Link DIR-882是中国友讯（D-Link）公司的一款双频无线路由器。 D-Link DIR-882 1.01B02版本存在操作系统命令注入漏洞，该漏洞源于HNAP1 SetNetworkSettings Handler组件中prog.cgi文件sprintf函数对参数IPAddress的错误操作，可能导致os命令注入攻击。
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 DIR-882 1.01B02 -

II. Public POCs for CVE-2026-5844

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III. Intelligence Information for CVE-2026-5844

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Vendor Pages for CVE-2026-5844 (1)

Other References for CVE-2026-5844 (1)

Same Patch Batch · D-Link · 2026-04-09 · 7 CVEs total

CVE-2026-5984 8.8 HIGH D-Link DIR-605L POST Request formSetLog buffer overflow
CVE-2026-5983 8.8 HIGH D-Link DIR-605L POST Request formSetDDNS buffer overflow
CVE-2026-5982 8.8 HIGH D-Link DIR-605L POST Request formAdvNetwork buffer overflow
CVE-2026-5981 8.8 HIGH D-Link DIR-605L POST Request formAdvFirewall buffer overflow
CVE-2026-5980 8.8 HIGH D-Link DIR-605L POST Request formSetMACFilter buffer overflow
CVE-2026-5979 8.8 HIGH D-Link DIR-605L POST Request formVirtualServ buffer overflow

IV. Related Vulnerabilities

Same product: DIR-882
Same vendor: D-Link
Same weakness: CWE-78

V. Comments for CVE-2026-5844

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