CVE-2017-0263

HIGH KEV

Microsoft Windows - Use-After-Free in Kernel-Mode Drivers

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2017-0263 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added February 10, 2022. EIP tracks 2 public exploits from researchers including xiaodaozhi, R06otMD5.

AI-analyzed exploit summary This exploit targets CVE-2017-0263, a Windows kernel vulnerability in win32k.sys, to achieve local privilege escalation (LPE) by manipulating window objects and executing shellcode in kernel mode. The PoC includes shellcode to replace the token of a target process with that of the system process.

Description

The kernel-mode drivers in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability."

Exploits (2)

exploitdb WORKING POC
by xiaodaozhi · c++localwindows_x86
https://www.exploit-db.com/exploits/44478

This exploit targets CVE-2017-0263, a Windows kernel vulnerability in win32k.sys, to achieve local privilege escalation (LPE) by manipulating window objects and executing shellcode in kernel mode. The PoC includes shellcode to replace the token of a target process with that of the system process.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Complex
Reliability
Reliable
Target: Microsoft Windows (win32k.sys)
Auth required
Prerequisites: Local access to a vulnerable Windows system · Ability to compile and execute the exploit
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec STUB
by R06otMD5 · poc
https://github.com/R06otMD5/cve-2017-0263-poc

The repository contains only a minimal README with no technical details or exploit code. It is a placeholder with no functional PoC.

Classification
Stub 90%
Attack Type
Other
Complexity
Trivial
Reliability
Theoretical
Target: unknown
No auth needed
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (6)

Core 6
Core References
Broken Link, Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1038449
Broken Link, Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/98258
Exploit, Third Party Advisory x_refsource_misc
https://xiaodaozhi.com/exploit/117.html
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/44478/

Scores

CVSS v3 7.8
EPSS 0.2077
EPSS Percentile 95.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact total

Details

CISA KEV 2022-02-10
VulnCheck KEV 2017-05-09
InTheWild.io 2017-05-09
ENISA EUVD EUVD-2017-0619
CWE
CWE-416
Status published
Products (13)
microsoft/windows_10_1507
microsoft/windows_10_1511
microsoft/windows_10_1607
microsoft/windows_10_1703
microsoft/windows_7
microsoft/windows_8.1
microsoft/windows_rt_8.1
microsoft/windows_server_2008
microsoft/windows_server_2008 r2 sp1
microsoft/windows_server_2012
... and 3 more
Published May 12, 2017
KEV Added Feb 10, 2022
Tracked Since Feb 18, 2026