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CVE-2015-1671

Microsoft Windows Remote Code Execution

7.8 HIGHActively exploited (CISA KEV)EPSS 49.0%
  1. Published13 May 2015
  2. Added to CISA KEV25 May 2022
  3. Remediation due15 Jun 2022
Actively exploited (CISA KEV)

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

Added to KEV: 25 May 2022Federal remediation due: 15 Jun 2022

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."

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Microsoft Live Meeting2007
Microsoft Lync2010 · 2013
Microsoft .net Framework3.0 · 3.5 · 3.5.1 · 4.0
Microsoft Silverlight5.0

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

Frequently asked

Is CVE-2015-1671 being actively exploited?

Yes. CVE-2015-1671 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 25 May 2022.

How severe is CVE-2015-1671?

CVE-2015-1671 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 49.0% probability of exploitation.

Which products are affected by CVE-2015-1671?

Affected products include Microsoft Live Meeting, Microsoft Lync, Microsoft .net Framework, Microsoft Silverlight.

How do I fix CVE-2015-1671?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2015-1671 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.