win32k.sys in the kernel-mode drivers in Microsoft Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, Windows 7 Gold and SP1, Wind…

published 2013-01-09 13y ago modified 2026-06-16 4mo ago also EUVD-2013-0051

cvss: 7.2; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 17.1%; EPSS 17.1% chance of exploitation in 30 days, percentile 97%
public exploits: 3; Metasploit and Exploit-DB

win32k.sys in the kernel-mode drivers in Microsoft Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, Windows 7 Gold and SP1, Windows 8, Windows Server 2012, and Windows RT does not properly handle window broadcast messages, which allows local users to gain privileges via a crafted application, aka "Win32k Improper Message Handling Vulnerability."

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Timeline

2012-11-27 First public exploit (Metasploit exploit/windows/local/ms13_005_hwnd_broadcast)
2013-01-09 Published

Exploit prediction

17.09% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

Metasploit exploit/windows/local/ms13_005_hwnd_broadcast MS13-005 HWND_BROADCAST Low to Medium Integrity Privilege Escalation metasploit exploit, excellent rank, 2012-11-27
EDB-27296 Microsoft Windows - HWND_BROADCAST Low to Medium Integrity Privilege Escalation (MS13-005) (Metasploit) local, 2013-08-02
EDB-24485 Microsoft Windows - HWND_BROADCAST (PoC) (MS13-005) dos, 2013-02-11

CVSS scores

assigned by	version	score	vector
NVD	2.0	7.2	AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

CWE-264 Permissions, Privileges, and Access Controls

References

exploit-db.com /exploits/24485
exploit
docs.microsoft.com /en-us/security-updates/securitybulletins/2013/ms13-005
vendor-advisory
us-cert.gov /cas/techalerts/TA13-008A.html
third-party-advisory, us-government-resource
oval.cisecurity.org /repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16326
vdb-entry, signature
securityfocus.com /bid/57135
vdb-entry

Sources

CVE List CVE-2013-0008
NVD CVE-2013-0008

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.