CVE-2012-0227: Buffer overflow in the VSFlex7.VSFlexGrid ActiveX control in ComponentOne FlexGrid 7.1, as used in Open Automa

Q: How do I fix CVE-2012-0227?

flexgrid: downgrade or apply the listed mitigation; opcsystems.net: upgrade to newer than 4.0. Exact commands for each OS are on this page.

Q: Is CVE-2012-0227 being exploited?

CVE-2012-0227 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-2012-0227 affect?

CVE-2012-0227 affects flexgrid, opcsystems.net. Severity is high (CVSS 9.3). Buffer overflow in the VSFlex7.VSFlexGrid ActiveX control in ComponentOne FlexGrid 7.1, as used in Open Automation Software OPC Systems.NET, allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long

Q: How urgent is CVE-2012-0227?

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

This week

HIGH 9.3DOWNGRADEUPGRADE

CVE-2012-0227 is a high-severity flaw (CVSS 9.3) affecting flexgrid, opcsystems.net. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in the VSFlex7.VSFlexGrid ActiveX control in ComponentOne FlexGrid 7.1, as used in Open Automation Software OPC Systems.NET, allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long archive file name argument to the Archive method.

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	9.3 (High)
EPSS exploit chance	5.7% (top 7%)
CISA exploited list	No
Weakness	CWE-119
Published	2012-10-12
Last modified	2026-06-16

Publisher (CNA): CERT/CC · Vendor: componentone · opcsystems

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

Am I affected?

Timeline

2012-10-12 20:55 UTCPublished CVE record published
2026-06-16 23:36 UTCUpdated Record last modified

componentone flexgrid DOWNGRADE

Affected: 7.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.1

1. Check installed version

apt-cache policy flexgrid || rpm -q flexgrid || flexgrid --version

2. No fixed release: DOWNGRADE to a release before 7.1 (Debian / Ubuntu)

apt-cache madison flexgrid sudo apt install flexgrid=<VERSION_BEFORE_7.1> sudo apt-mark hold flexgrid

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

dnf --showduplicates list flexgrid sudo dnf downgrade flexgrid-<VERSION_BEFORE_7.1> sudo dnf versionlock add flexgrid

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.

opcsystems opcsystems.net UPGRADE

Affected: <= 4.0 · all versions

Fixed in: newer than 4.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy opcsystems.net || rpm -q opcsystems.net || opcsystems.net --version

2. UPGRADE to newer than 4.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade opcsystems.net

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade opcsystems.net

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-2012-0227?

flexgrid: downgrade or apply the listed mitigation; opcsystems.net: upgrade to newer than 4.0. Exact commands for each OS are on this page.

Is CVE-2012-0227 being exploited?

CVE-2012-0227 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-2012-0227 affect?

CVE-2012-0227 affects flexgrid, opcsystems.net. Severity is high (CVSS 9.3). Buffer overflow in the VSFlex7.VSFlexGrid ActiveX control in ComponentOne FlexGrid 7.1, as used in Open Automation Software OPC Systems.NET, allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long

How urgent is CVE-2012-0227?

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

References

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