CVE-2012-0228: Invensys Wonderware Information Server 4.0 SP1 and 4.5 does not properly implement client controls, which allo

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HIGH 7.5DOWNGRADE

CVE-2012-0228 is a high-severity flaw (CVSS 7.5) affecting wonderware information server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Invensys Wonderware Information Server 4.0 SP1 and 4.5 does not properly implement client controls, which allows remote attackers to bypass intended access restrictions via unspecified vectors.

Why this priority

High severity

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.2% (top 18%)
CISA exploited list	No
Weakness	CWE-264
Published	2012-04-02
Last modified	2026-06-16

Publisher (CNA): CERT/CC · Vendor: invensys

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

Am I affected?

Timeline

2012-04-02 20:55 UTCPublished CVE record published
2026-06-16 23:36 UTCUpdated Record last modified

invensys wonderware information server DOWNGRADE

Affected: 4.0 sp1 · 4.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0

1. Check installed version

apt-cache policy wonderware-information-server || rpm -q wonderware-information-server || wonderware-information-server --version

2. No fixed release: DOWNGRADE to a release before 4.0 (Debian / Ubuntu)

apt-cache madison wonderware-information-server sudo apt install wonderware-information-server=<VERSION_BEFORE_4.0> sudo apt-mark hold wonderware-information-server

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

dnf --showduplicates list wonderware-information-server sudo dnf downgrade wonderware-information-server-<VERSION_BEFORE_4.0> sudo dnf versionlock add wonderware-information-server

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.

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-2012-0228?

wonderware information server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2012-0228 being exploited?

CVE-2012-0228 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-2012-0228 affect?

CVE-2012-0228 affects wonderware information server. Severity is high (CVSS 7.5). Invensys Wonderware Information Server 4.0 SP1 and 4.5 does not properly implement client controls, which allows remote attackers to bypass intended access restrictions via unspecified vectors.

How urgent is CVE-2012-0228?

Priority 47/100. High severity

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References

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