How severe is CVE-2011-2764?

CVE-2011-2764 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2011-2764 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-2764?

CVE-2011-2764 primarily affects Ioquake3 Ioquake3 Engine. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-2764?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2011-2764 published?

CVE-2011-2764 was published on 2011-08-04 and last updated on 2026-06-16.

CVE-2011-2764

CVE-2011-2764 is a critical-severity vulnerability in Ioquake3 Ioquake3 Engine with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 9% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Ioquake3 Ioquake3 Engine
Published: 2011-08-04
Last modified: 2026-06-16

Description

The FS_CheckFilenameIsNotExecutable function in qcommon/files.c in the ioQuake3 engine 1.36 and earlier, as used in World of Padman, Smokin' Guns, OpenArena, Tremulous, and ioUrbanTerror, does not properly determine dangerous file extensions, which allows remote attackers to execute arbitrary code via a crafted third-party addon that creates a Trojan horse DLL file.

Frequently asked questions

What is CVE-2011-2764?: The FS_CheckFilenameIsNotExecutable function in qcommon/files.c in the ioQuake3 engine 1.36 and earlier, as used in World of Padman, Smokin' Guns, OpenArena, Tremulous, and ioUrbanTerror, does not properly determine dangerous file extensions, which allows remote attackers to execute arbitrary code via a crafted third-party addon that creates a Trojan horse DLL file.
How severe is CVE-2011-2764?: CVE-2011-2764 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2011-2764 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-2764?: CVE-2011-2764 primarily affects Ioquake3 Ioquake3 Engine. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-2764?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2011-2764 published?: CVE-2011-2764 was published on 2011-08-04 and last updated on 2026-06-16.

References

Affected products (7)

cpe:2.3:a:ioquake3:ioquake3_engine:*:*:*:*:*:*:*:*
cpe:2.3:a:ioquake3:ioquake3_engine:1.36:rc1:*:*:*:*:*:*
cpe:2.3:a:openarena:openarena:*:*:*:*:*:*:*:*
cpe:2.3:a:smokin-guns:smokin\'_guns:*:*:*:*:*:*:*:*
cpe:2.3:a:tremulous:tremulous:*:*:*:*:*:*:*:*
cpe:2.3:a:urbanterror:iourbanterror:*:*:*:*:*:*:*:*
cpe:2.3:a:worldofpadman:world_of_padman:*:*:*:*:*:*:*:*

More vulnerabilities in Ioquake3 Ioquake3 Engine

CVE-2011-3012 — Critical (CVSS 10.0): The ioQuake3 engine, as used in World of Padman 1.2 and earlier, Tremulous 1.1.0, and ioUrbanTerror 2007-12-20, does…
CVE-2010-5077 — High (CVSS 7.8): server/sv_main.c in Quake3 Arena, as used in ioquake3 before r1762, OpenArena, Tremulous, and other products, allows…
CVE-2011-1412 — High (CVSS 7.5): sys/sys_unix.c in the ioQuake3 engine on Unix and Linux, as used in World of Padman 1.5.x before 1.5.1.1 and OpenArena…
CVE-2012-3345 — Medium (CVSS 5.6): ioquake3 before r2253 allows local users to overwrite arbitrary files via a symlink attack on the /tmp/ioq3.pid…

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