CVE-2021-47829
CVE-2021-47829 is a high-severity vulnerability with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-428.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v4: 8.5
- EPSS exploit prediction: 0% (5th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-2890
- Weakness: CWE-428
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2021-47829?
- 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.
- How severe is CVE-2021-47829?
- CVE-2021-47829 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-47829 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2021-47829?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2021-47829 have an EU (EUVD) identifier?
- Yes. CVE-2021-47829 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2890.
- When was CVE-2021-47829 published?
- CVE-2021-47829 was published on 2026-01-16 and last updated on 2026-06-17.
References
- https://www.exploit-db.com/exploits/49850
- https://www.vulncheck.com/advisories/dhcp-broadband-dhcptexe-unquoted-service-path
- https://www.weird-solutions.com
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