CVE-2015-2456

Microsoft Lync - Remote Code Execution via TrueType Font Parsing

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2015-2456. PoCs published by Google Security Research.

AI-analyzed exploit summary This exploit demonstrates a pool-based buffer overflow in the Windows kernel's win32k!scl_ApplyTranslation function, triggered by malformed TTF font files. The vulnerability can lead to remote code execution in kernel context on Windows 7 and 8.1 systems.

Description

Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT Gold and 8.1, Windows 10, Office 2007 SP3 and 2010 SP2, Live Meeting 2007 Console, Lync 2010, Lync 2010 Attendee, Lync 2013 SP1, Lync Basic 2013 SP1, Silverlight before 5.1.40728, and .NET Framework 3.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, 4.5.2, and 4.6 allow remote attackers to execute arbitrary code via a crafted TrueType font, aka "TrueType Font Parsing Vulnerability," a different vulnerability than CVE-2015-2455.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · textdoswindows
https://www.exploit-db.com/exploits/37918

This exploit demonstrates a pool-based buffer overflow in the Windows kernel's win32k!scl_ApplyTranslation function, triggered by malformed TTF font files. The vulnerability can lead to remote code execution in kernel context on Windows 7 and 8.1 systems.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Windows 7 and 8.1 (win32k.sys)
No auth needed
Prerequisites: Malformed TTF font file · Ability to load the font on the target system
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Patch, Vendor Advisory vendor-advisory x_refsource_ms
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-080
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1033238
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/76241
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/37918/

Scores

EPSS 0.3556
EPSS Percentile 98.3%

Details

CWE
CWE-20
Status published
Products (26)
microsoft/.net_framework 3.0 sp2
microsoft/.net_framework 4.0
microsoft/.net_framework 4.5
microsoft/.net_framework 4.5.1
microsoft/.net_framework 4.5.2
microsoft/.net_framework 4.6
microsoft/.net_framework 3.5.1
microsoft/.net_framework 3.5
microsoft/live_meeting 2007
microsoft/lync 2010 (2 CPE variants)
... and 16 more
Published Aug 15, 2015
Tracked Since Feb 18, 2026