CVE-2009-4007

CVE-2009-4007 is a medium-severity vulnerability in Openttd with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

• Severity: Medium (CVSS 2.0 base score 5.0)
• EPSS exploit prediction: 2% (80th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Openttd
• Published: 2009-12-28
• Last modified: 2026-06-16

Description

Unspecified vulnerability in the NormaliseTrainConsist function in src/train_cmd.cpp in OpenTTD before 0.7.5-RC1 allows remote attackers to cause a denial of service (daemon crash) via certain game actions involving a wagon and a dual-headed engine.

Frequently asked questions

What is CVE-2009-4007?

Unspecified vulnerability in the NormaliseTrainConsist function in src/train_cmd.cpp in OpenTTD before 0.7.5-RC1 allows remote attackers to cause a denial of service (daemon crash) via certain game actions involving a wagon and a dual-headed engine.

How severe is CVE-2009-4007?

CVE-2009-4007 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2009-4007 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-4007?

CVE-2009-4007 primarily affects Openttd. In total, 52 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-4007?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-4007 published?

CVE-2009-4007 was published on 2009-12-28 and last updated on 2026-06-16.

References

• http://binaries.openttd.org/releases/0.7.5/changelog.txt
• http://lists.fedoraproject.org/pipermail/package-announce/2010-January/033754.html
• http://lists.fedoraproject.org/pipermail/package-announce/2010-January/033896.html
• http://osvdb.org/61356
• http://secunia.com/advisories/37929
• http://secunia.com/advisories/37984
• http://vcs.openttd.org/svn/changeset/18462/trunk/src/train_cmd.cpp
• http://www.openttd.org/en/news/112
• http://www.openwall.com/lists/oss-security/2009/12/24/1
• http://www.securityfocus.com/bid/37487
• http://www.vupen.com/english/advisories/2009/3645

Affected products (52)

• cpe:2.3:a:openttd:openttd:*:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.1.4:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.3.2:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.3.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.3.3:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.3.4:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.3.5:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.3.6:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.3.7:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.4.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.4.5:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.4.6:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.4.7:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.4.8:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.4.8:rc1:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.4.8:rc2:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.5.0:rc1:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.5.0:rc2:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.5.0:rc3:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.5.0:rc4:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.5.0:rc5:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.5.1:rc1:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.5.1:rc2:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.5.1:rc3:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.5.2:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.5.2:rc1:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.5.3:*:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.5.3:rc1:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.5.3:rc2:*:*:*:*:*:*
• cpe:2.3:a:openttd:openttd:0.5.3:rc3:*:*:*:*:*:*

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