Vulnerability · Published Apr 26, 2026 · Assigned by VulDB

CVE-2026-7067D-Link DIR-822 udhcpd DHCP Service dhcpd.c system command injection

High 7.3

In plain English

A high-severity command injection in DIR-822 from D-Link. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.7% (higher than 86% of all known vulnerabilities).

Severity (CVSS 3.1)7.3High

Exploit odds (30 days)2.7%top 13.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
D-Link	DIR-822	A_101

Weakness: CWE-77, CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-359642 | D-Link DIR-822 udhcpd DHCP Service dhcpd.c system command injection vdb-entry, technical-description
VDB-359642 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #798645 | D-Link DIR822A_101 A_101 Buffer Overflow third-party-advisory
https://tzh00203.notion.site/D-Link-DIR-822-A1-Command-Injection-in-udhcpd-via-DHCP-Hostname-337b5c52018a80d9b638d0fa59969e6b exploit
https://www.dlink.com/ product