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CVE

CVE-2015-1671

Microsoft Windows Remote Code Execution Vulnerability

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.".

HIGH · CVSS 7.8 ⚠ CISA KEV EPSS 0.88026
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 1% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬢

Required Remediation

Apply updates per vendor instructions.

▤

Affected Products & Versions

4
microsoft .net frameworkall versions
microsoft live meetingall versions
microsoft lyncall versions
microsoft silverlightall versions
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD13 May 2015 · 10:59 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
cisaKEV-CVE-2015-1671
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/74490Broken LinkThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1032281Broken LinkThird Party AdvisoryVDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-044PatchVendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-1671US Government Resource
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