CVE-2016-3209

MEDIUM

Microsoft Windows and Office - ASLR Bypass via TrueType Font Parsing

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2016-3209. PoCs published by Google Security Research.

AI-analyzed exploit summary This exploit demonstrates an out-of-bounds read vulnerability in the Windows kernel's win32k!itrp_GetCVTEntryFast function, triggered by a malformed TTF font file. The issue allows disclosure of adjacent kernel memory, potentially aiding in KASLR bypass.

Description

Graphics Device Interface (aka GDI or GDI+) in Microsoft Windows Vista SP2; 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, and 1607; Office 2007 SP3; Office 2010 SP2; Word Viewer; Skype for Business 2016; Lync 2013 SP1; Lync 2010; Lync 2010 Attendee; Live Meeting 2007 Console; .NET Framework 3.0 SP2, 3.5, 3.5.1, 4.5.2, and 4.6; and Silverlight 5 allows remote attackers to bypass the ASLR protection mechanism via unspecified vectors, aka "True Type Font Parsing Information Disclosure Vulnerability."

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · textdoswindows
https://www.exploit-db.com/exploits/40598

This exploit demonstrates an out-of-bounds read vulnerability in the Windows kernel's win32k!itrp_GetCVTEntryFast function, triggered by a malformed TTF font file. The issue allows disclosure of adjacent kernel memory, potentially aiding in KASLR bypass.

Classification
Working Poc 90%
Attack Type
Info Leak
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Windows 7 and 8.1 (win32k.sys)
No auth needed
Prerequisites: Ability to deliver a malformed TTF font file to 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/1036988
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/93385

Scores

CVSS v3 5.5
EPSS 0.5365
EPSS Percentile 98.9%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Details

CWE
CWE-200
Status published
Products (24)
microsoft/.net_framework 3.0 sp2
microsoft/.net_framework 3.5
microsoft/.net_framework 3.5.1
microsoft/.net_framework 4.5.2
microsoft/.net_framework 4.6
microsoft/live_meeting 2007
microsoft/lync 2010 (2 CPE variants)
microsoft/lync 2013 sp1
microsoft/office 2007 sp3
microsoft/office 2010 sp2
... and 14 more
Published Oct 14, 2016
Tracked Since Feb 18, 2026