What is CVE-2021-47884?

CVE-2021-47884 is a high-severity vulnerability in Oki Configuration Tool, classified under Unquoted Search Path or Element. CVSS score: 7.8/10. Published 2026-01-21.

How severe is CVE-2021-47884?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Oki Configuration Tool

CVE-2021-47884

OKI Configuration Tool 1.6.53 contains an unquoted service path vulnerability in the OKI Local Port Manager service that allows local attackers to potentially execute arbitrary code. Attackers can exploit the unquoted path in 'C:\Program Files\Okidata\Common\extend3\portmgrsrv.exe' to inject malicious executables and escalate privileges.

Published 2026-01-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.001 (3.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Oki Configuration Tool — versions 1.6.53

Weakness classification (CWE)

CWE-428 — Unquoted Search Path or Element

References

www.exploit-db.com/exploits/49624 (exploit)
web.archive.org/web/20211207181409/https://www.oki.com/me/printing/services-and… (product)
www.vulncheck.com/advisories/configuration-tool-oplclsrv-unquoted-service-path (third-party-advisory)

Frequently asked questions

What is CVE-2021-47884?: CVE-2021-47884 is a high-severity vulnerability in Oki Configuration Tool, classified under Unquoted Search Path or Element. CVSS score: 7.8/10. Published 2026-01-21.
How severe is CVE-2021-47884?: High severity. CVSS v3 base score is 7.8 out of 10.