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CVE-2015-1671

HIGH
7.8
CVSS Score
Published: May 13, 2015 at 10:00 AM UTC
Updated: June 17, 2026 at 12:22 AM UTC
11 products affected across 1 vendor.NET FrameworkLyncSilverlight

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Severity
HIGH7.8
Exploitation
CISA KEV
Exploit prediction
EPSS 49%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score48.8%

EPSS (Exploit Prediction Scoring System) estimates a 48.8% chance this CVE is exploited in the wild within the next 30 days — higher than 99% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

A remote code execution vulnerability exists when components of Windows, .NET Framework, Office, Lync, and Silverlight fail to properly handle TrueType fonts.

Required Action
Apply updates per vendor instructions.
Ransomware Use
Unknown
Added to KEV
May 25, 2022
Remediation Due
Jun 15, 2022
1594 days overdue
Notes
https://nvd.nist.gov/vuln/detail/CVE-2015-1671

Description

The Windows DirectWrite library, as used in Microsoft .NET Framework 3.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2; Office 2007 SP3 and 2010 SP2; Live Meeting 2007 Console; Lync 2010; Lync 2010 Attendee; Lync 2013 SP1; Lync Basic 2013 SP1; Silverlight 5 before 5.1.40416.00; and Silverlight 5 Developer Runtime before 5.1.40416.00, allows remote attackers to execute arbitrary code via a crafted TrueType font, aka "TrueType Font Parsing Vulnerability."

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Live Meeting· Microsoft
95%
2007
Lync· Microsoft
95%
20102013 sp1
.NET Framework· Microsoft
95%
3.0 sp23.53.5.14.04.54.5.14.5.2
microsoft-windows-7 (environment) · microsoft-windows-8 (environment) · microsoft-windows-8-1 (environment) · microsoft-windows-server-2003 (environment) · microsoft-windows-server-2008 (environment) · microsoft-windows-server-2012 (environment) · microsoft-windows-vista (environment)
Silverlight· Microsoft
95%
5.0
Windows 7· Microsoftdevice
80%
All versions
Windows 8· Microsoftdevice
80%
All versions
Windows 8-1· Microsoftdevice
80%
All versions
Windows Server 2003· Microsoftdevice
80%
All versions
Windows Server 2008· Microsoftdevice
80%
All versions
Windows Server 2012· Microsoftdevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

VDB Entryx_refsource_BIDBroken LinkThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/74490
VDB Entryx_refsource_SECTRACKBroken LinkThird Party Advisory
Source: [email protected]
http://www.securitytracker.com/id/1032281
Vendor Advisoryx_refsource_MSPatch
Source: [email protected]
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-044
US Government Resource
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-1671

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-noinfo

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