CVE-2009-0298: Heap-based buffer overflow in MW6 Technologies Barcode ActiveX control (Barcode.MW6Barcode.1, Barcode.dll) 3.0

This week

HIGH 9.3DOWNGRADE

CVE-2009-0298 is a high-severity flaw (CVSS 9.3) affecting barcode activex. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Heap-based buffer overflow in MW6 Technologies Barcode ActiveX control (Barcode.MW6Barcode.1, Barcode.dll) 3.0.0.1 allows remote attackers to execute arbitrary code via a long Supplement property.

Why this priority

Critical severity
EPSS top 7%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.3 (High)
EPSS exploit chance	5.6% (top 7%)
CISA exploited list	No
Weakness	CWE-119
Published	2009-01-27
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: mw6 technologies

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2009-01-27 20:30 UTCPublished CVE record published
2026-06-16 23:04 UTCUpdated Record last modified

mw6 technologies barcode activex DOWNGRADE

Affected: 3.0.0.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0.0.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.0.0.1 (Debian / Ubuntu)

apt-cache madison barcode-activex sudo apt install barcode-activex=<VERSION_BEFORE_3.0.0.1> sudo apt-mark hold barcode-activex

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list barcode-activex sudo dnf downgrade barcode-activex-<VERSION_BEFORE_3.0.0.1> sudo dnf versionlock add barcode-activex

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: MW6 Barcode - ActiveX 'Barcode.dll' Remote Heap Overflow (PoC)

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-2009-0298?

barcode activex: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2009-0298 being exploited?

CVE-2009-0298 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-2009-0298 affect?

CVE-2009-0298 affects barcode activex. Severity is high (CVSS 9.3). Heap-based buffer overflow in MW6 Technologies Barcode ActiveX control (Barcode.MW6Barcode.1, Barcode.dll) 3.0.0.1 allows remote attackers to execute arbitrary code via a long Supplement property.

How urgent is CVE-2009-0298?

Priority 61/100. Critical severity; EPSS top 7%: very likely to be exploited; Public exploit reference

References

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