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CVE-2009-4007

17
FAUCET Score

CVE-2009-4007 describes an unspecified vulnerability in OpenTTD versions prior to 0.7.5-RC1, specifically within the NormaliseTrainConsist function. This flaw allows remote attackers to trigger a denial of service (daemon crash) through specific game actions involving a wagon and a dual-headed engine. With a CVSS score of 5.0, it is considered a medium-severity vulnerability, requiring no authentication and having a low attack complexity, but only impacting availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.7.4CPE matchmatch criteria
cpe:2.3:a:openttd:openttd:*:*:*:*:*:*:*:*
0.1.1CPE matchmatch criteria
cpe:2.3:a:openttd:openttd:0.1.1:*:*:*:*:*:*:*
0.1.2CPE matchmatch criteria
cpe:2.3:a:openttd:openttd:0.1.2:*:*:*:*:*:*:*
0.1.3CPE matchmatch criteria
cpe:2.3:a:openttd:openttd:0.1.3:*:*:*:*:*:*:*
0.1.4CPE matchmatch criteria
cpe:2.3:a:openttd:openttd:0.1.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.13%
Probability of exploitation in next 30 days
EPSS Percentile
80.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0213 is in the 69th percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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