CVE-2020-1020: Microsoft Windows Adobe Font Manager Library Remote Code Execution Vulnerability

High severity, CVSS 8.8. Actively exploited: in CISA KEV since 2021-11-03. EPSS: 65% chance of exploitation in the next 30 days.

A remote code execution vulnerability exists in Microsoft Windows when the Windows Adobe Type Manager Library improperly handles a specially-crafted multi-master font - Adobe Type 1 PostScript format.For all systems except Windows 10, an attacker who successfully exploited the vulnerability could execute code remotely, aka 'Adobe Font Manager Library Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-0938.

Affected products

• Microsoft Windows 10 1507: affected versions not specified
• Microsoft Windows 10 1607: affected versions not specified
• Microsoft Windows 10 1709: affected versions not specified
• Microsoft Windows 10 1803: affected versions not specified
• Microsoft Windows 10 1809: affected versions not specified
• Microsoft Windows 10 1903: affected versions not specified
• Microsoft Windows 10 1909: affected versions not specified
• Microsoft Windows 7: affected versions not specified
• Microsoft Windows 8.1: affected versions not specified
• Microsoft Windows Rt 8.1: affected versions not specified
• Microsoft Windows Server 1903: affected versions not specified
• Microsoft Windows Server 1909: affected versions not specified
• Microsoft Windows Server 2008: affected versions not specified; version r2 only
• Microsoft Windows Server 2012: affected versions not specified; version r2 only
• Microsoft Windows Server 2016: affected versions not specified
• Microsoft Windows Server 2019: affected versions not specified

Published 2020-04-15. Last modified 2026-06-17.