CVE-2021-47829
DHCP Broadband 4.1.0.1503 - 'dhcpt.exe' Unquoted Service Path
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.
INFO
Published Date :
Jan. 16, 2026, 7:16 p.m.
Last Modified :
Jan. 16, 2026, 7:16 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2021-47829
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update the service path to use quotes.
- Ensure the service path is properly escaped.
- Restart the affected service.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-47829.
| URL | Resource |
|---|---|
| https://www.exploit-db.com/exploits/49850 | |
| https://www.vulncheck.com/advisories/dhcp-broadband-dhcptexe-unquoted-service-path | |
| https://www.weird-solutions.com |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47829 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-47829
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-47829 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47829 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Jan. 16, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-428 Added Reference https://www.exploit-db.com/exploits/49850 Added Reference https://www.vulncheck.com/advisories/dhcp-broadband-dhcptexe-unquoted-service-path Added Reference https://www.weird-solutions.com