Security readout for executives and security teams
Plain-English summary
OKI Configuration Tool 1.6.53 installs a Windows service with an improperly formatted file path. A logged-in attacker could abuse this local flaw to run code with higher privileges. It is not a remote internet bug, but it matters on shared workstations, print-management systems, and endpoints where untrusted users can log in.
Executive priority
Prioritize remediation on shared workstations, print servers, and systems used by non-administrative users. Business urgency is high when local access is common, because successful abuse can convert a limited account into a privileged foothold.
Technical view
CVE-2021-47884 is a CWE-428 unquoted service path issue in the OKI Local Port Manager service, identified as OpLclSrv. The affected path is C:\Program Files\Okidata\Common\extend3\portmgrsrv.exe. The CVSS v4 score is 8.5 with local attack vector, low privileges required, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to systems running OKI Configuration Tool version 1.6.53. The attacker needs local access with some privileges. The sources do not show broad internet exposure or confirm other OKI versions are affected.
Exploitation context
A public ExploitDB entry exists, so proof-of-concept information is public. The source bundle does not show CISA KEV listing or confirmed active exploitation. Treat this as a local privilege-escalation risk rather than a remote compromise path.
Researcher notes
Evidence supports a local privilege-escalation issue in OKI Configuration Tool 1.6.53 only. Patch status is not established in the provided sources. Avoid assuming affected versions beyond 1.6.53 without vendor confirmation or direct testing.
Mitigation direction
- Identify systems with OKI Configuration Tool 1.6.53 installed.
- Check OKI or product maintainer guidance for supported updates or configuration fixes.
- Remove the tool where it is no longer operationally required.
- Restrict local interactive access on affected systems.
- Review permissions on OKI installation directories for unnecessary write access.
Validation and detection
- Inventory Windows hosts for OKI Configuration Tool 1.6.53.
- Confirm whether the OpLclSrv or OKI Local Port Manager service exists.
- Review the service executable path for unquoted spaces.
- Verify directory permissions along the service path are appropriately restricted.
- Document any compensating controls or vendor-approved remediation applied.
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 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-2021-47884 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-49624CVE reference · exploit
- Archived OKI Product WebpageCVE reference · product
- VulnCheck Advisory: Configuration Tool 1.6.53 - 'OpLclSrv' 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.