CVE-2017-0283

HIGH

Microsoft Lync - Remote Code Execution

Title source: rule
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-0283. PoCs published by Google Security Research.

AI-analyzed exploit summary This exploit demonstrates a crash in the Windows Uniscribe library (USP10!MergeLigRecords) due to a corrupted font file, leading to an access violation in memmove(). The issue is similar to CVE-2017-0087, suggesting an incomplete fix.

Description

Uniscribe in 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, Windows Server 2016, Microsoft Office 2007 SP3, Microsoft Office 2010 SP2, Microsoft Office Word Viewer, Microsoft Lync 2013 SP1, Skype for Business 2016, Microsoft Silverlight 5 Developer Runtime when installed on Microsoft Windows, and Microsoft Silverlight 5 when installed on Microsoft Windows allows a remote code execution vulnerability due to the way it handles objects in memory, aka "Windows Uniscribe Remote Code Execution Vulnerability". This CVE ID is unique from CVE-2017-8528.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · textdoswindows
https://www.exploit-db.com/exploits/42234

This exploit demonstrates a crash in the Windows Uniscribe library (USP10!MergeLigRecords) due to a corrupted font file, leading to an access violation in memmove(). The issue is similar to CVE-2017-0087, suggesting an incomplete fix.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: Windows Uniscribe (USP10.DLL) on Windows 7
No auth needed
Prerequisites: Corrupted font file · Application rendering text with the font
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (6)

Core 6
Core References
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/42234/
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1038675
Mitigation, Patch, Vendor Advisory x_refsource_confirm
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0283
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/98920

Scores

CVSS v3 8.8
EPSS 0.3902
EPSS Percentile 98.4%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

Status published
Products (19)
microsoft/lync 2013 sp1
microsoft/office 2007 sp3
microsoft/office 2010 sp2
microsoft/office_word_viewer
microsoft/silverlight 5.0
microsoft/skype_for_business 2016
microsoft/windows_10
microsoft/windows_10 1511
microsoft/windows_10 1607
microsoft/windows_10 1703
... and 9 more
Published Jun 15, 2017
Tracked Since Feb 18, 2026