CVE-2017-0087

HIGH

Microsoft Windows Uniscribe - Remote Code Execution via Crafted Website

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-0087. 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 malformed font file, leading to a memory corruption vulnerability. The PoC includes a corrupted font file that triggers an access violation during text rendering.

Description

Uniscribe in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, and Windows 7 SP1 allows remote attackers to execute arbitrary code via a crafted web site, aka "Uniscribe Remote Code Execution Vulnerability." This vulnerability is different from those described in CVE-2017-0072, CVE-2017-0083, CVE-2017-0084, CVE-2017-0086, CVE-2017-0088, CVE-2017-0089, and CVE-2017-0090.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · textdoswindows
https://www.exploit-db.com/exploits/41650

This exploit demonstrates a crash in the Windows Uniscribe library (USP10!MergeLigRecords) due to a malformed font file, leading to a memory corruption vulnerability. The PoC includes a corrupted font file that triggers an access violation during text rendering.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Windows Uniscribe (USP10.dll) on Windows 7
No auth needed
Prerequisites: A malformed font file · A program to render the font's glyphs
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/41650/
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1037992
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/96604

Scores

CVSS v3 8.8
EPSS 0.4255
EPSS Percentile 98.5%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-119
Status published
Products (5)
microsoft/windows_7
microsoft/windows_server_2008
microsoft/windows_server_2008 r2 sp1
microsoft/windows_vista
Microsoft Corporation/Windows Uniscribe Uniscribe in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, and Windows 7 SP1
Published Mar 17, 2017
Tracked Since Feb 18, 2026