HIGHCVSS v3.1 8.8Actively exploited · CISA KEV since 2021-11-03Vulnerability

CVE-2020-1020

Microsoft Windows Adobe Font Manager Library contains an unspecified vulnerability when handling specially crafted multi-master fonts (Adobe Type 1 PostScript format) that allows for remote code execution for all systems except Windows 10. For systems running Windows 10, an attacker who successfully exploited the vulnerability could execute code in an AppContainer sandbox context with limited privileges and capabilities.

Properties

Euvd product
Windows Server, Windows 10 Version 1909 for x64-based Systems, Windows, Windows 10 Version 1909 for ARM64-based Systems, Windows Server, version 1903 (Server Core installation), Windows Server, version 1909 (Server Core installation), Windows 10 Version 1903 for x64-based Systems, Windows 10 Version 1903 for 32-bit Systems, Windows 10 Version 1909 for 32-bit Systems, Windows 10 Version 1903 for ARM64-based Systems
Vulnerability name
Microsoft Windows Adobe Font Manager Library Remote Code Execution Vulnerability
First seen
2025-10-21T23:35:46+00:00
Cvss score
8.8
Epss score
0.65037
Last seen
2026-10-19T12:00:27+00:00
Due date
2022-05-03
Euvd assigner
microsoft
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2021-11-03T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2021-11-03
Score
8.8
Euvd base score version
3.1
Fetched at
2026-10-20T10:36:20+00:00
Euvd vendor
Microsoft
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
8.8

Related Entities (31 · showing 23)

AFFECTS_PRODUCT (28 · showing 20)

→[Product]cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_server_1903:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x86:*
→[Product]cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:arm64:*
→[Product]cpe:2.3:o:microsoft:windows_server_1909:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:*
→[Product]cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_10_1507:-:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:*
→[Product]cpe:2.3:o:microsoft:windows_10_1507:-:*:*:*:*:*:x86:*

DESCRIBES (1)

←[KEVEntry]Microsoft Windows Adobe Font Manager Library Remote Code Execution Vulnerability

HAS_WEAKNESS (1)

→[Weakness]Out-of-bounds Write

INVOLVES (1)

←[Signal]kev_added · 2021-11-03

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CVE-2020-1020 (CVSS v3.1 8.8) — Ninja Signal Threat Intelligence | Ninja Signal