CVE-2026-7067— D-Link DIR-822 udhcpd DHCP Service dhcpd.c system command injection
Quick assessment
Affected
D-Link DIR-822
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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-822是中国友讯（D-Link）公司的一款无线路由器。 D-Link DIR-822 A_101版本存在注入漏洞，该漏洞源于udhcpd DHCP服务中/udhcpcd/dhcpd.c文件system函数对参数Hostname的操作，可能导致命令注入。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-7067
Vulnerability Information
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Vulnerability Title
D-Link DIR-822 udhcpd DHCP Service dhcpd.c system command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in D-Link DIR-822 A_101. The impacted element is the function system of the file /udhcpcd/dhcpd.c of the component udhcpd DHCP Service. This manipulation of the argument Hostname causes command injection. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. 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:N/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-822 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
D-Link DIR-822是中国友讯（D-Link）公司的一款无线路由器。 D-Link DIR-822 A_101版本存在注入漏洞，该漏洞源于udhcpd DHCP服务中/udhcpcd/dhcpd.c文件system函数对参数Hostname的操作，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
II. Public POCs for CVE-2026-7067
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Vendor Advisories for CVE-2026-7067 (1)
-
🔗 Submit #798645: D-Link DIR822A_101 A_101 Buffer Overflow third-party-advisory
News Coverage for CVE-2026-7067 (1)
Vendor Pages for CVE-2026-7067 (1)
Same Patch Batch · D-Link · 2026-04-26 · 4 CVEs total
| CVE-2026-7068 | 8.8 HIGH | D-Link DIR-825 nmbd sserver.c NMBD_process buffer overflow |
| CVE-2026-7026 | 4.5 MEDIUM | D-Link DGS-3420 System Information Settings cross site scripting |
| CVE-2026-7027 | 2.4 LOW | D-Link DSL-2740R Wireless Setup Section cross site scripting |
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V. Comments for CVE-2026-7067
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