What is CVE-2020-7850?

CVE-2020-7850 is a high-severity vulnerability in Douzone Nbbdownloader.ocx, classified under Argument Injection. CVSS score: 7.8/10. Published 2021-03-29.

How severe is CVE-2020-7850?

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

Vulnerability in Douzone Nbbdownloader.ocx

CVE-2020-7850

NBBDownloader.ocx ActiveX Control in Groupware contains a vulnerability that could allow remote files to be downloaded and executed by setting the arguments to the activex method. A remote attacker could induce a user to access a crafted web page, causing damage such as malicious code infection.

Published 2021-03-29 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.008 (54.0th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Douzone Nbbdownloader.ocx
Douzone Ict Group. Nbbdownloader.ocx — versions 1.0.0.13
Microsoft Windows

Weakness classification (CWE)

CWE-88 — Argument Injection

References

www.boho.or.kr/krcert/secNoticeView.do (Third Party Advisory, Not Applicable)
help.neobizbox.com/ (Vendor Advisory)

Frequently asked questions

What is CVE-2020-7850?: CVE-2020-7850 is a high-severity vulnerability in Douzone Nbbdownloader.ocx, classified under Argument Injection. CVSS score: 7.8/10. Published 2021-03-29.
How severe is CVE-2020-7850?: High severity. CVSS v3 base score is 7.8 out of 10.