CVE-2020-1436

Description

A remote code execution vulnerability exists when the Windows font library improperly handles specially crafted fonts.For all systems except Windows 10, an attacker who successfully exploited the vulnerability could execute code remotely, aka 'Windows Font Library Remote Code Execution Vulnerability'.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 9.30% Top 10%
Vendor Advisory microsoft.com
Affected: Microsoft Windows 10 Version 2004 for 32-bit Systems
Affected: Microsoft Windows 10 Version 2004 for ARM64-based Systems
Affected: Microsoft Windows 10 Version 2004 for x64-based Systems
Affected: Microsoft Windows Server, version 2004 (Server Core installation)
Affected: Microsoft Windows
Affected: Microsoft Windows Server
Affected: Microsoft Windows 10 Version 1909 for 32-bit Systems
Affected: Microsoft Windows 10 Version 1909 for x64-based Systems
Affected: Microsoft Windows 10 Version 1909 for ARM64-based Systems
Affected: Microsoft Windows Server, version 1909 (Server Core installation)
Affected: Microsoft Windows 10 Version 1903 for 32-bit Systems
Affected: Microsoft Windows 10 Version 1903 for x64-based Systems
Affected: Microsoft Windows 10 Version 1903 for ARM64-based Systems
Affected: Microsoft Windows Server, version 1903 (Server Core installation)
Published at:
Updated at:

References

Link Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1436 patch vendor advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-877/ vdb entry third party advisory
http://www.openwall.com/lists/oss-security/2020/08/25/3 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2020/08/25/5 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2020-1436?
CVE-2020-1436 has been scored as a high severity vulnerability.
How to fix CVE-2020-1436?
To fix CVE-2020-1436, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-1436 being actively exploited in the wild?
It is possible that CVE-2020-1436 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~9% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-1436?
CVE-2020-1436 affects Microsoft Windows 10 Version 2004 for 32-bit Systems, Microsoft Windows 10 Version 2004 for ARM64-based Systems, Microsoft Windows 10 Version 2004 for x64-based Systems, Microsoft Windows Server, version 2004 (Server Core installation), Microsoft Windows, Microsoft Windows Server, Microsoft Windows 10 Version 1909 for 32-bit Systems, Microsoft Windows 10 Version 1909 for x64-based Systems, Microsoft Windows 10 Version 1909 for ARM64-based Systems, Microsoft Windows Server, version 1909 (Server Core installation), Microsoft Windows 10 Version 1903 for 32-bit Systems, Microsoft Windows 10 Version 1903 for x64-based Systems, Microsoft Windows 10 Version 1903 for ARM64-based Systems, Microsoft Windows Server, version 1903 (Server Core installation).
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.