Security readout for executives and security teams
Plain-English summary
DHCP Broadband 4.1.0.1503 installs a Windows service with an unsafe, unquoted executable path. A local attacker with low privileges could abuse service startup to run code as LocalSystem, potentially taking full control of that host.
Executive priority
Prioritize remediation on servers where DHCP Broadband is installed, especially shared or remotely administered Windows hosts. This is not a remote-entry vulnerability, but it can turn limited local access into full system control.
Technical view
CVE-2021-47829 is a CWE-428 unquoted service path issue in Weird-Solutions DHCP Broadband 4.1.0.1503. The vulnerable service path references dhcpt.exe under Program Files without quotes, enabling local privilege escalation during service startup. CVSS 4.0 score is 8.5 high.
Likely exposure
Exposure is limited to Windows systems running Weird-Solutions DHCP Broadband version 4.1.0.1503 with the affected service configuration. The issue requires local access and low privileges, so it is most relevant after initial compromise or insider access.
Exploitation context
A public ExploitDB entry is referenced, indicating public exploit information exists. The CVE is not listed as CISA KEV in the provided sources, and no cited source states active exploitation in the wild.
Researcher notes
The core risk is local privilege escalation via Windows service path parsing. Sources identify version 4.1.0.1503 only. Patch status is not confirmed in the provided material; avoid assuming other versions or fixes without vendor evidence.
Mitigation direction
- Inventory systems for DHCP Broadband 4.1.0.1503.
- Check Weird-Solutions and VulnCheck guidance for vendor-confirmed fixes.
- If vendor-supported, correct the service executable path quoting.
- Restrict local interactive and remote logon access to affected servers.
- Monitor affected hosts for suspicious service-startup behavior.
Validation and detection
- Confirm whether DHCP Broadband 4.1.0.1503 is installed.
- Review the dhcpt.exe service configuration for an unquoted path.
- Verify service permissions and who can write along the path.
- Check endpoint logs for unexpected binaries launched during service startup.
- Document whether compensating controls limit local low-privilege access.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-428: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-47829 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.5 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.5HighVector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-49850CVE reference · exploit
- Vendor HomepageCVE reference · product
- VulnCheck Advisory: DHCP Broadband 4.1.0.1503 - 'dhcpt.exe' Unquoted Service PathCVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Unquoted Search Path or Element
Unquoted Search Path or Element represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.