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CVE-2020-7850

24
FAUCET Score

CVE-2020-7850 describes a critical vulnerability in the NBBDownloader.ocx ActiveX Control, affecting Douzone and Microsoft Windows products, which allows remote attackers to download and execute arbitrary files. This high-severity vulnerability (CVSS 7.8) can be exploited with low complexity if a user is tricked into visiting a malicious webpage, potentially leading to complete compromise of confidentiality, integrity, and availability. While no public exploits (Metasploit, Nuclei, ExploitDB) are currently available and there is minimal community discussion or media coverage, the potential for significant damage remains.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.0.0.12CPE matchmatch criteria
cpe:2.3:a:douzone:nbbdownloader.ocx:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.77%
Probability of exploitation in next 30 days
EPSS Percentile
52.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0077 is in the 49th percentile among its peer group of 11,616 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

help.neobizbox.com
Vendor Advisory
boho.or.kr / krcert/secNoticeView.do
Not ApplicableThird Party Advisory