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CVE-2017-0283

55
FAUCET Score

CVE-2017-0283 is a remote code execution vulnerability in Microsoft's Uniscribe component, affecting various versions of Windows, Microsoft Office, Lync, Skype for Business, and Silverlight. This flaw stems from how Uniscribe handles objects in memory. It carries a high CVSS score of 8.8, indicating a critical risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While not listed in CISA's KEV catalog, an ExploitDB entry exists for a heap memory corruption vulnerability related to Uniscribe font processing, and it has received some community discussion and media coverage, including reports of it being used in live attacks.

Impacted Technologies

VendorProductVersion(s)CPE
2013CPE matchmatch criteria
cpe:2.3:a:microsoft:lync:2013:sp1:*:*:*:*:*:*
2007CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2007:sp3:*:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2010:sp2:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:office_word_viewer:-:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:a:microsoft:silverlight:5.0:*:*:*:*:windows:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
39.02%
Probability of exploitation in next 30 days
EPSS Percentile
98.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-42234 · Jun 23, 2017
This CVE's current EPSS score of 0.3902 is in the 99th percentile among its peer group of 14,848 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (46)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Windows 10 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1511 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1511 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1607 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1607 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 7 for 32-bit Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Windows 7 for x64-based Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Windows 8.1 for 32-bit systems
View patch
microsoftpatch availablevia msrc
Product: Windows 8.1 for x64-based systems
View patch
microsoftpatch availablevia msrc
Product: Windows RT 8.1
microsoftpatch availablevia msrc
Product: Windows Server 2008 for 32-bit Systems Service Pack 2
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2008 for Itanium-Based Systems Service Pack 2
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2008 for x64-based Systems Service Pack 2
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2008 R2 for x64-based Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2012
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2012 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2012 R2
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2012 R2 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2016
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2016 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1703 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1703 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Office 2007 Service Pack 3
View patch
microsoftpatch availablevia msrc
Product: Microsoft Office 2010 Service Pack 2 (32-bit editions)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Office 2010 Service Pack 2 (64-bit editions)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Office Word Viewer
View patch
microsoftpatch availablevia msrc
Product: Microsoft Live Meeting 2007 Add-in
View patch
microsoftpatch availablevia msrc
Product: Microsoft Live Meeting 2007 Console
View patch
microsoftpatch availablevia msrc
Product: Microsoft Lync 2010 (32-bit)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Lync 2010 (64-bit)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Lync 2010 Attendee (admin level install)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Lync 2010 Attendee (user level install)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Lync 2013 Service Pack 1 (32-bit)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Lync 2013 Service Pack 1 (64-bit)
View patch
microsoftpatch availablevia msrc
Product: Skype for Business 2016 (32-bit)
View patch
microsoftpatch availablevia msrc
Product: Skype for Business 2016 (64-bit)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Silverlight 5 Developer Runtime when installed on Microsoft Windows (32-bit)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Silverlight 5 Developer Runtime when installed on Microsoft Windows (x64-based)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Silverlight 5 when installed on Microsoft Windows (32-bit)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Silverlight 5 when installed on Microsoft Windows (x64-based)
View patch

Vendor Advisories (1)

microsoft2017-Jun/CVE-2017-0283Critical

Windows Uniscribe Remote Code Execution Vulnerability

Jun 13, 2017

References

0patch.blogspot.com / 2017/07/0patching-quick-brown-fox-of-cve-2017.html
bugs.chromium.org / p/project-zero/issues/detail
portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2017-0283
MitigationPatchVendor Advisory
exploit-db.com / exploits/42234
securityfocus.com / bid/98920
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038675