CVE-2013-6999

MediumCVSS 4.0/10Last modified Jun 17, 2026

Description

The IsHandleEntrySecure function in win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2008 SP2 does not properly validate the tagPROCESSINFO pW32Job field, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted NtUserValidateHandleSecure call for an owned object. NOTE: the vendor reportedly disputes the significance of this report, stating that "it appears to be a local DOS ... we don't consider it a security vulnerability.

Metrics

CVSS 2.0 4.0/10AV:L/AC:H/Au:N/C:N/I:N/A:C

Affected software

No affected versions have been published.

Timeline

Published: Dec 7, 2013
Last modified: Jun 17, 2026
NVD status: Modified

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