CVE-2017-8490

MEDIUM

Windows Kernel - Authenticated Information Disclosure via Specially Crafted Application

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-8490. PoCs published by Google Security Research.

AI-analyzed exploit summary The exploit demonstrates an information disclosure vulnerability in the win32k!NtGdiEnumFonts system call, which leaks uninitialized pool memory to user-mode clients. The PoC shows that large portions of memory contain leftover data or special pool markers (0x47).

Description

The kernel 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 allows an authenticated attacker to obtain information via a specially crafted application. aka "Windows Kernel Information Disclosure Vulnerability," a different vulnerability than CVE-2017-8492, CVE-2017-8491, CVE-2017-8489, CVE-2017-8488, CVE-2017-8485, CVE-2017-8483, CVE-2017-8482, CVE-2017-8480, CVE-2017-8479, CVE-2017-8478, CVE-2017-8476, CVE-2017-8474, CVE-2017-8469, CVE-2017-8462, CVE-2017-0300, CVE-2017-0299, and CVE-2017-0297.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · textdoswindows
https://www.exploit-db.com/exploits/42214

The exploit demonstrates an information disclosure vulnerability in the win32k!NtGdiEnumFonts system call, which leaks uninitialized pool memory to user-mode clients. The PoC shows that large portions of memory contain leftover data or special pool markers (0x47).

Classification
Working Poc 90%
Attack Type
Info Leak
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Windows win32k.sys
No auth needed
Prerequisites: Windows system with Special Pools enabled for win32k.sys
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/42214/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/98867

Scores

CVSS v3 5.0
EPSS 0.0487
EPSS Percentile 90.9%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

Details

CWE
CWE-200
Status published
Products (12)
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 r2 sp1 (2 CPE variants)
microsoft/windows_server_2012
microsoft/windows_server_2012 r2
... and 2 more
Published Jun 15, 2017
Tracked Since Feb 18, 2026