CVE-2015-1671: Microsoft Windows Remote Code Execution Vulnerability
Vulnerability summary
CVE-2015-1671 is a high (CVSS 9.3) vulnerability in Microsoft Windows. It is known to be exploited: CISA lists it, first on 25-05-2022. EPSS estimates a 48.99% chance of exploitation in the next 30 days, higher than 98.8% of scored vulnerabilities.
Timeline
- 13-05-2015PublishedVulnerability first disclosed.
- 25-05-2022Added to CISA KEVMicrosoft Windows Remote Code Execution Vulnerability
- 15-06-2022CISA remediation dueApply updates per vendor instructions.
- 21-10-2025Last modifiedVulnerability information updated.
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 metrics
3 scores · 2 sources · 2 versions- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
48.99%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
-5.64 pp
From 54.63% on 19-09-2026
Known exploited
Compare KEV catalogs
CISA KEVListed- Added
- 25-05-2022
- Federal due date
- 15-06-2022
CISA required action
Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2015-1671
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Microsoft4 products
- live_meeting2007
- lync2010 | 2013:sp1
- .net_framework3.0:sp2 | 4.0 | 4.5 | 4.5.1 | 4.5.2 | 3.5.1 | 3.5
- silverlight5.0
1 vendor · 4 products
References
4 links
docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-044Vendor AdvisoryX Refsource MSPatch- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-1671Government ResourceUS Government Resource