CVE-2015-1671
Microsoft Windows Remote Code Execution Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 15 June 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 48.83% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 25 May 2022 · due 15 June 2022
- Affected
- microsoft/.net framework · microsoft/live meeting · microsoft/lync · microsoft/silverlight
- Source
- secure@microsoft.com
EPSS moved from 49.0% on 24 September 2026 to 48.8% on 30 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2015-1671
References
- http://www.securityfocus.com/bid/74490Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1032281Broken Link, Third Party Advisory, VDB Entry
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-044Patch, Vendor Advisory
- http://www.securityfocus.com/bid/74490Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1032281Broken Link, Third Party Advisory, VDB Entry
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-044Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-1671US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.