CVE-2020-7850: NBBDownloader.ocx ActiveX Control in Groupware contains a vulnerability that could allow remote files to be do

Q: How do I fix CVE-2020-7850?

nbbdownloader.ocx: upgrade to newer than 1.0.0.12. Exact commands for each OS are on this page.

Q: Is CVE-2020-7850 being exploited?

CVE-2020-7850 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-7850 affect?

CVE-2020-7850 affects nbbdownloader.ocx. Severity is high (CVSS 7.8). 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 we

This month

HIGH 7.8UPGRADE

CVE-2020-7850 is a high-severity flaw (CVSS 7.8) affecting nbbdownloader.ocx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 43%)
CISA exploited list	No
Weakness	CWE-88
Published	2021-03-29
Last modified	2026-06-17

Publisher (CNA): KrCERT/CC · Vendor: douzone

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-03-29 16:15 UTCPublished CVE record published
2026-06-17 03:25 UTCUpdated Record last modified

douzone nbbdownloader.ocx UPGRADE

Affected: <= 1.0.0.12

Fixed in: newer than 1.0.0.12

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy nbbdownloader.ocx || rpm -q nbbdownloader.ocx || nbbdownloader.ocx --version

2. UPGRADE to newer than 1.0.0.12 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade nbbdownloader.ocx

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade nbbdownloader.ocx

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-7850?

nbbdownloader.ocx: upgrade to newer than 1.0.0.12. Exact commands for each OS are on this page.

Is CVE-2020-7850 being exploited?

CVE-2020-7850 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-7850 affect?

CVE-2020-7850 affects nbbdownloader.ocx. Severity is high (CVSS 7.8). 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 we

How urgent is CVE-2020-7850?

Priority 41/100. High severity

References

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