CVE-2015-1671
Published: May 25, 2022
Official Description
A remote code execution vulnerability exists when components of Windows, .NET Framework, Office, Lync, and Silverlight fail to properly handle TrueType fonts.
CISA KEV Advisory
Microsoft Windows Remote Code Execution Vulnerability
A remote code execution vulnerability exists when components of Windows, .NET Framework, Office, Lync, and Silverlight fail to properly handle TrueType fonts.
Apply updates per vendor instructions.
Risk Analysis
A remote code execution vulnerability exists in various Microsoft components, including Windows, .NET Framework, Office, Lync, and Silverlight, due to improper handling of TrueType fonts. The high EPSS score of 0.85928 indicates a very high likelihood of exploitation, making this a significant risk across multiple platforms.
This vulnerability is actively exploited in the wild and is included in CISA's KEV catalog, confirming its active use by threat actors.
Ensure all affected Microsoft products and components, including Windows, .NET Framework, Office, Lync, and Silverlight, are fully updated with the latest security patches.
Technical Analysis
CVE-2015-1671 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2015-1671 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2015-1671 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1