CVE-2015-1721

Windows Kernel-Mode Drivers - Local Privilege Escalation via NULL Pointer Dereference

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2015-1721. PoCs published by Nils Sommer.

AI-analyzed exploit summary This exploit triggers a null pointer dereference in the Windows kernel (win32k.sys) by manipulating window station and clipboard operations, leading to a write to a chosen memory location. It demonstrates a privilege escalation vulnerability on Windows 7 32-bit systems.

Description

The kernel-mode drivers in Microsoft Windows Server 2003 SP2 and R2 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allow local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via a crafted application, aka "Win32k Null Pointer Dereference Vulnerability."

Exploits (1)

exploitdb WORKING POC VERIFIED
by Nils Sommer · textdoswindows_x86
https://www.exploit-db.com/exploits/38274

This exploit triggers a null pointer dereference in the Windows kernel (win32k.sys) by manipulating window station and clipboard operations, leading to a write to a chosen memory location. It demonstrates a privilege escalation vulnerability on Windows 7 32-bit systems.

Classification
Working Poc 90%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Windows 7 32-bit
No auth needed
Prerequisites: Windows 7 32-bit system · Ability to execute arbitrary code on the target system
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1032525
Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/38274/
Patch, Vendor Advisory vendor-advisory x_refsource_ms
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-061

Scores

EPSS 0.0330
EPSS Percentile 86.9%

Details

CWE
CWE-476
Status published
Products (12)
microsoft/windows_7
microsoft/windows_8
microsoft/windows_8.1
microsoft/windows_rt
microsoft/windows_rt_8.1
microsoft/windows_server_2003
microsoft/windows_server_2003 r2 sp2
microsoft/windows_server_2008
microsoft/windows_server_2008 r2 sp1 (2 CPE variants)
microsoft/windows_server_2012
... and 2 more
Published Jun 10, 2015
Tracked Since Feb 18, 2026