CVE-2018-5221: Multiple buffer overflows in BarCodeWiz BarCode before 6.7 ActiveX control (BarcodeWiz.DLL) allow remote attac

Q: How do I fix CVE-2018-5221?

barcode activex control: upgrade to 6.7. Exact commands for each OS are on this page.

Q: Is CVE-2018-5221 being exploited?

CVE-2018-5221 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-2018-5221 affect?

CVE-2018-5221 affects barcode activex control. Severity is high (CVSS 8.8). Multiple buffer overflows in BarCodeWiz BarCode before 6.7 ActiveX control (BarcodeWiz.DLL) allow remote attackers to execute arbitrary code via a long argument to the (1) BottomText or (2) TopText property.

Q: How urgent is CVE-2018-5221?

Priority 58/100. High severity; EPSS top 10%: very likely to be exploited; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2018-5221 is a high-severity flaw (CVSS 8.8) affecting barcode activex control. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple buffer overflows in BarCodeWiz BarCode before 6.7 ActiveX control (BarcodeWiz.DLL) allow remote attackers to execute arbitrary code via a long argument to the (1) BottomText or (2) TopText property.

Why this priority

High severity
EPSS top 10%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	3.9% (top 10%)
CISA exploited list	No
Weakness	CWE-119
Published	2018-01-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: barcodewiz

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

Am I affected?

Timeline

2018-01-09 16:29 UTCPublished CVE record published
2026-06-17 01:59 UTCUpdated Record last modified

barcodewiz barcode activex control UPGRADE

Affected: < 6.7

Fixed in: 6.7

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy barcode-activex-control || rpm -q barcode-activex-control || barcode-activex-control --version

2. UPGRADE to 6.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade barcode-activex-control

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade barcode-activex-control

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-2018-5221?

barcode activex control: upgrade to 6.7. Exact commands for each OS are on this page.

Is CVE-2018-5221 being exploited?

CVE-2018-5221 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-2018-5221 affect?

CVE-2018-5221 affects barcode activex control. Severity is high (CVSS 8.8). Multiple buffer overflows in BarCodeWiz BarCode before 6.7 ActiveX control (BarcodeWiz.DLL) allow remote attackers to execute arbitrary code via a long argument to the (1) BottomText or (2) TopText property.

How urgent is CVE-2018-5221?

Priority 58/100. High severity; EPSS top 10%: very likely to be exploited; Public exploit reference

References

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