CVE-2017-8687

MEDIUM

Windows Kernel - Information Disclosure via Improper Memory Handling

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-8687. PoCs published by Google Security Research.

AI-analyzed exploit summary This exploit demonstrates an information leak vulnerability in the Windows win32k.sys driver (CVE-2017-8687) by hooking the user32!ClientPrinterThunk callback to capture uninitialized kernel stack memory disclosed during the NtGdiDoBanding system call.

Description

The Windows kernel component on 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, and 1703, and Windows Server 2016 allows an information disclosure vulnerability when it improperly handles objects in memory, aka "Win32k Information Disclosure Vulnerability". This CVE ID is unique from CVE-2017-8678, CVE-2017-8680, CVE-2017-8677, and CVE-2017-8681.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · c++doswindows
https://www.exploit-db.com/exploits/42749

This exploit demonstrates an information leak vulnerability in the Windows win32k.sys driver (CVE-2017-8687) by hooking the user32!ClientPrinterThunk callback to capture uninitialized kernel stack memory disclosed during the NtGdiDoBanding system call.

Classification
Working Poc 100%
Attack Type
Info Leak
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Windows 7 32-bit (win32k.sys)
Auth required
Prerequisites: Local access to a vulnerable Windows 7 32-bit system · Ability to execute arbitrary code on the target system
mistral-large-3 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/100736
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/42749/
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1039325

Scores

CVSS v3 5.5
EPSS 0.0423
EPSS Percentile 90.0%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-200
Status published
Products (13)
microsoft/windows_10
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 Sep 13, 2017
Tracked Since Feb 18, 2026