CISA KEV catalog
Confirmed active exploitation.
Listed in CISA's catalog of Known Exploited Vulnerabilities: attackers are using it in real attacks. Patch it with priority.
- Name
- Microsoft Windows Remote Code Execution Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
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 products
microsoft: .net framework; microsoft: windows server 2003; microsoft: windows server 2008; microsoft: windows vista; microsoft: windows 7; microsoft: windows 8; microsoft: windows 8.1; microsoft: windows server 2012; microsoft: live meeting; microsoft: lync; microsoft: silverlight
References7
- docs.microsoft.com/en-us/security-updates/securitybulletins/201… PatchVendor Advisory
- docs.microsoft.com/en-us/security-updates/securitybulletins/201… PatchVendor Advisory
- www.securityfocus.com/bid/74490 Broken LinkThird Party AdvisoryVDB Entry
- www.securitytracker.com/id/1032281 Broken LinkThird Party AdvisoryVDB Entry
- www.securityfocus.com/bid/74490 Broken LinkThird Party AdvisoryVDB Entry
- www.securitytracker.com/id/1032281 Broken LinkThird Party AdvisoryVDB Entry
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=… US Government Resource
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 49% percentile: 99 · as of 2 November 2026