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Vulnerability record · CVE-2011-2764 · published 4 August 2011

CVE-2011-2764: Ioquake3 engine improper input validation vulnerability

Ioquake3 · Ioquake3 Engine

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.

10.0 CVSS 2.0 High EPSS 8.7% · top 5.0% CWE-20 · Improper input validation
10.0CVSS 2.0 base score
8.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
6Affected product versions listed by NVD
24References, 4 tagged exploit
16 Jun 2026Last modified by NVD

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.

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

Affected products

6 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://archives.neohapsis.com/archives/fulldisclosure/2011-07/0338.html Exploit
http://lists.fedoraproject.org/pipermail/package-announce/2011-August/063460.html
http://secunia.com/advisories/45539
http://secunia.com/advisories/45540
http://securityreason.com/securityalert/8324
http://svn.icculus.org/quake3?view=rev&revision=2098 Patch
http://thilo.tjps.eu/download/patches/ioq3-svn-r2098.diff Patch
http://www.securityfocus.com/archive/1/519051/100/0/threaded
http://www.securityfocus.com/bid/48915
https://bugzilla.redhat.com/show_bug.cgi?id=725951 ExploitPatch
https://exchange.xforce.ibmcloud.com/vulnerabilities/68870
https://security.gentoo.org/glsa/201706-23
http://archives.neohapsis.com/archives/fulldisclosure/2011-07/0338.html Exploit
http://lists.fedoraproject.org/pipermail/package-announce/2011-August/063460.html
http://secunia.com/advisories/45539
http://secunia.com/advisories/45540
http://securityreason.com/securityalert/8324
http://svn.icculus.org/quake3?view=rev&revision=2098 Patch
http://thilo.tjps.eu/download/patches/ioq3-svn-r2098.diff Patch
http://www.securityfocus.com/archive/1/519051/100/0/threaded
http://www.securityfocus.com/bid/48915
https://bugzilla.redhat.com/show_bug.cgi?id=725951 ExploitPatch
https://exchange.xforce.ibmcloud.com/vulnerabilities/68870
https://security.gentoo.org/glsa/201706-23

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2011-3012Ioquake3 engine improper input validation vulnerabilityThe ioQuake3 engine, as used in World of Padman 1.2 and earlier, Tremulous 1.1.0, and ioUrbanTerror 2007-12-20, does not check for dangerous file ext…EPSS 8.0%7.8CVE-2010-5077Ioquake3 engine improper input validation vulnerabilityserver/sv_main.c in Quake3 Arena, as used in ioquake3 before r1762, OpenArena, Tremulous, and other products, allows remote attackers to cause a deni…EPSS 2.1%7.5CVE-2011-1412Ioquake3 engine improper input validation vulnerabilitysys/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 0.8.x-15 and 0.8.x-16, allows …EPSS 4.2%5.6CVE-2012-3345Ioquake3 engine link following vulnerabilityioquake3 before r2253 allows local users to overwrite arbitrary files via a symlink attack on the /tmp/ioq3.pid temporary file.EPSS 0.29%9.5CVE-2026-93952Arista velocloud orchestrator improper input validation vulnerabilityVeloCloud Orchestrator (VCO) on-prem has a security issue where this issue may allow a remote attacker to access privileged internal functionality an…KEVEPSS 0.90%8.8CVE-2019-1068Microsoft SQL Server improper input validation remote code executionMicrosoft SQL Server mishandles processing of internal functions, allowing an authenticated remote attacker to execute code on the database server. T…KEVEPSS 58%analysed5.9CVE-2025-68686FortiOS symbolic link patch bypass exposes sensitive informationFortiOS contains an information exposure flaw (CWE-200) that lets a remote unauthenticated attacker bypass the patch for the symbolic link persistenc…KEVEPSS 30%analysed9.3CVE-2026-12569PTC Windchill PDMlink and FlexPLM deserialization RCEPTC Windchill PDMlink and FlexPLM contain a deserialization of untrusted data flaw (also classified as improper input validation) that allows remote …KEVEPSS 46%analysed

Source: NIST National Vulnerability Database (record CVE-2011-2764), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.