Security readout for executives and security teams
Plain-English summary
FreeLAN 2.2 for Windows can be misconfigured so its service starts the wrong program with system-level rights. This is not a remote internet attack, but it can let someone who already has local access gain full control of that machine.
Executive priority
Treat as a high-priority endpoint/server hardening issue where FreeLAN 2.2 exists. It is mainly a privilege-escalation risk after local access, so prioritize internet-facing jump hosts, shared workstations, and servers with multiple users.
Technical view
CVE-2021-47882 is a CWE-428 unquoted service path issue in the FreeLAN 2.2 Windows “FreeLAN Service.” A low-privileged local attacker may abuse Windows path resolution so code runs as LocalSystem when the service starts. The supplied CVSS v4.0 score is 8.5.
Likely exposure
Exposure appears limited to Windows hosts running FreeLAN 2.2 with the FreeLAN Service installed. Systems without FreeLAN, non-Windows deployments, or versions not identified in the source bundle are not confirmed affected.
Exploitation context
The vulnerability requires local access and service startup conditions. A public ExploitDB reference exists, but the source bundle does not show CISA KEV listing or confirmed active exploitation.
Researcher notes
The bundle identifies FreeLAN 2.2 only and provides no CPEs. No vendor patch version is named in the supplied sources. Validate actual service configuration before escalating, because unquoted path impact depends on installation path and permissions.
Mitigation direction
- Inventory Windows endpoints and servers for FreeLAN 2.2 installations.
- Check vendor project and advisory sources for confirmed fixed versions or guidance.
- Remove or disable FreeLAN where it is not business-required.
- Restrict local interactive access to systems running affected FreeLAN.
- Apply approved service configuration changes only through change control.
Validation and detection
- Confirm whether FreeLAN 2.2 is installed on Windows systems.
- Review the FreeLAN Service binary path configuration for unquoted spaces.
- Verify service runs under LocalSystem or another privileged account.
- Check whether local users can write to relevant service path locations.
- Document version, service state, and remediation status per host.
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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-47882 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-49630CVE reference · exploit
- FreeLAN GitHub RepositoryCVE reference · product
- VulnCheck Advisory: FreeLAN 2.2 - 'FreeLAN Service' 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.