# CVE-2020-0938: Microsoft Windows Adobe Font Manager Library Remote Code Execution Vulnerability

> CVE-2020-0938: Microsoft Windows Adobe Font Manager Library Remote Code Execution Vulnerability. CVSS 7.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2020-0938
Last updated: 2025-10-21T23:35:46Z

- Published: 2020-04-15 15:12 UTC · Updated: 2025-10-21 23:35 UTC · Assigner: microsoft
- CVSS: 7.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS: 68.9%, 99th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2021-11-03, federal due date 2022-05-03, ransomware use: Unknown

## Description

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-2020-1020.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Microsoft: Windows
- Microsoft: Windows 10 Version 1903 for 32-bit Systems
- Microsoft: Windows 10 Version 1903 for ARM64-based Systems
- Microsoft: Windows 10 Version 1903 for x64-based Systems
- Microsoft: Windows 10 Version 1909 for 32-bit Systems
- Microsoft: Windows 10 Version 1909 for ARM64-based Systems
- Microsoft: Windows 10 Version 1909 for x64-based Systems
- Microsoft: Windows Server
- Microsoft: Windows Server, version 1903 (Server Core installation)
- Microsoft: Windows Server, version 1909 (Server Core installation)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2020-0938)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2020-0938)
- [http://packetstormsecurity.com/files/161299/Apple-CoreText-libFontParser.dylib-Stack-Corruption.html](http://packetstormsecurity.com/files/161299/Apple-CoreText-libFontParser.dylib-Stack-Corruption.html)
- [https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0938](https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0938)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2020-0938 · Markdown: https://rewindex.com/cve/CVE-2020-0938.md · JSON: https://rewindex.com/api/v1/cves/CVE-2020-0938 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:13:16.276Z