win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, Win…

published 2013-04-09 13y ago modified 2026-06-16 4mo ago also EUVD-2013-1331

cvss: 7.1; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 4.6%; EPSS 4.6% chance of exploitation in 30 days, percentile 91%
public exploits: 0; none known

win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, Windows 7 Gold and SP1, and Windows 8 allows local users to cause a denial of service (reboot) via a crafted OpenType font, aka "OpenType Font Parsing Vulnerability" or "Win32k Font Parsing Vulnerability."

Is CVE-2013-1291 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

4.63% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	2.0	7.1	AV:N/AC:M/Au:N/C:N/I:N/A:C

Classification

Weakness

CWE-20 Improper Input Validation

References

docs.microsoft.com /en-us/security-updates/securitybulletins/2013/ms13-036
vendor-advisory
oval.cisecurity.org /repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16504
vdb-entry, signature

Sources

CVE List CVE-2013-1291
NVD CVE-2013-1291

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.