CVE-2021-47829

HIGH

DHCP Broadband 4.1.0.1503 - Code Injection

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-47829. PoCs published by Erick Galindo.

AI-analyzed exploit summary This is a writeup describing an unquoted service path vulnerability in DHCP Broadband 4.1.0.1503. The vulnerability allows potential privilege escalation by exploiting the unquoted path in the service configuration, which could lead to arbitrary code execution with elevated privileges during system startup or reboot.

Description

DHCP Broadband 4.1.0.1503 contains an unquoted service path vulnerability in its service configuration that allows local attackers to execute code with elevated privileges. Attackers can exploit the unquoted path in 'C:\Program Files\DHCP Broadband 4\dhcpt.exe' to inject malicious code that will execute during service startup with LocalSystem permissions.

Exploits (1)

exploitdb WRITEUP
by Erick Galindo · textlocalwindows
https://www.exploit-db.com/exploits/49850

This is a writeup describing an unquoted service path vulnerability in DHCP Broadband 4.1.0.1503. The vulnerability allows potential privilege escalation by exploiting the unquoted path in the service configuration, which could lead to arbitrary code execution with elevated privileges during system startup or reboot.

Classification
Writeup 90%
Attack Type
Lpe
Complexity
Trivial
Reliability
Theoretical
Target: DHCP Broadband 4.1.0.1503
Auth required
Prerequisites: Local access to the system · Ability to place an executable in a directory higher in the path hierarchy than the intended executable
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory exploit
https://www.exploit-db.com/exploits/49850
Various Sources product
https://www.weird-solutions.com

Scores

CVSS v3 7.8
EPSS 0.0015
EPSS Percentile 4.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-428
Status published
Published Jan 16, 2026
Tracked Since Feb 18, 2026