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Vulnerability record · CVE-2012-2118 · published 18 May 2012

CVE-2012-2118: X.org x11 improper input validation vulnerability

XX.Org · X11

Format string vulnerability in the LogVHdrMessageVerb function in os/log.c in X.Org X11 1.11 allows attackers to cause a denial of service or possibly execute arbitrary code via format string specifiers in an input device name.

10.0 CVSS 2.0 High EPSS 2.7% · top 14.9% CWE-20 · Improper input validation
10.0CVSS 2.0 base score
2.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References
16 Jun 2026Last modified by NVD

Description

Format string vulnerability in the LogVHdrMessageVerb function in os/log.c in X.Org X11 1.11 allows attackers to cause a denial of service or possibly execute arbitrary code via format string specifiers in an input device name.

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

Affected products

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

References

LinkTags
http://patchwork.freedesktop.org/patch/10001/ Patch
http://www.openwall.com/lists/oss-security/2012/04/18/8
http://www.openwall.com/lists/oss-security/2012/04/19/2
http://www.securityfocus.com/bid/53150
https://exchange.xforce.ibmcloud.com/vulnerabilities/74930
http://patchwork.freedesktop.org/patch/10001/ Patch
http://www.openwall.com/lists/oss-security/2012/04/18/8
http://www.openwall.com/lists/oss-security/2012/04/19/2
http://www.securityfocus.com/bid/53150
https://exchange.xforce.ibmcloud.com/vulnerabilities/74930

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Related vulnerabilities

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

10.0CVE-1999-0526X.org x11 vulnerabilityAn X server's access control is disabled (e.g. through an "xhost +" command) and allows anyone to connect to the server.EPSS 21%9.0CVE-2007-1003X.org x11 vulnerabilityInteger overflow in ALLOCATE_LOCAL in the ProcXCMiscGetXIDList function in the XC-MISC extension in the X.Org X11 server (xserver) 7.1-1.1.0, and oth…EPSS 5.2%7.5CVE-2013-7439X.org libx11 vulnerabilityMultiple off-by-one errors in the (1) MakeBigReq and (2) SetReqLen macros in include/X11/Xlibint.h in X11R6.x and libX11 before 1.6.0 allow remote at…EPSS 4.3%6.5CVE-2014-8102X.org x server memory buffer overflow vulnerabilityThe SProcXFixesSelectSelectionInput function in the XFixes extension in X.Org X Window System (aka X11 or X) X11R6.8.0 and X.Org Server (aka xserver …EPSS 4.4%6.5CVE-2014-8100X.org xfree86 memory buffer overflow vulnerabilityThe Render extension in XFree86 4.0.1, X.Org X Window System (aka X11 or X) X11R6.7, and X.Org Server (aka xserver and xorg-server) before 1.16.3 all…EPSS 4.4%6.5CVE-2014-8101X.org xfree86 memory buffer overflow vulnerabilityThe RandR extension in XFree86 4.2.0, X.Org X Window System (aka X11 or X) X11R6.7, and X.Org Server (aka xserver and xorg-server) before 1.16.3 allo…EPSS 4.4%6.5CVE-2014-8099X.org x11 memory buffer overflow vulnerabilityThe XVideo extension in XFree86 4.0.0, X.Org X Window System (aka X11 or X) X11R6.7, and X.Org Server (aka xserver and xorg-server) before 1.16.3 all…EPSS 4.3%6.5CVE-2014-8098Debian linux memory buffer overflow vulnerabilityThe GLX extension in XFree86 4.0, X.Org X Window System (aka X11 or X) X11R6.7, and X.Org Server (aka xserver and xorg-server) before 1.16.3 allows r…EPSS 5.2%

Source: NIST National Vulnerability Database (record CVE-2012-2118), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.