SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-0283

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…

EXPLOIT ✓HIGH 8.8EPSS 39.0%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 39.0%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

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.

CVSS 3.0
8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
39.02% probability · 99th percentile
Public exploits
1 in Exploit-DB · verified · first 23 June 2017
CISA KEV
Not listed
Affected
microsoft/lync · microsoft/office · microsoft/office word viewer · microsoft/silverlight · microsoft/skype for business · microsoft/windows 10 · microsoft/windows 7 · microsoft/windows 8.1 · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows server 2016
Source
secure@microsoft.com
EPSS trend
0%20%40%21 September 2026: 36.91%22 September 2026: 39.02%27 October 2026: 39.02%21 September 202627 October 2026

EPSS moved from 36.9% on 21 September 2026 to 39.0% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-42234source ↗Microsoft Windows - 'USP10!MergeLigRecords' Uniscribe Font Processing Heap Memory Corruptionwindows · Google Security Researchdos23 June 2017yes

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.