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CVE-2026-7067

D-Link DIR-822 udhcpd DHCP Service dhcpd.c system command injection

CVSS 6.9 MEDIUMEPSS 2.5%CWE-74CWE-77
Vexday Risk Score
33Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 6.9EPSS 2.5%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
26 Apr 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
D-Link · DIR-822
public PoCs found — 1
cve_referencetzh00203.notion.site/D-Link-DIR-822-A1-Command-Injection-in-udhcpd-via-DHCP-Hostname-337b5c52018a80d9b638d0fa59969e6bunverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References
https://tzh00203.notion.site/D-Link-DIR-822-A1-Command-Injection-in-udhcpd-via-DHCP-Hostname-337b5c52018a80d9b638d0fa59969e6bhttps://vuldb.com/submit/798645https://vuldb.com/vuln/359642https://vuldb.com/vuln/359642/ctihttps://www.dlink.com/