What’s Vulnerable › Vulnerabilities
CVE-2020-1464: Windows Spoofing Vulnerability
- Severity: low (CVSS 2.1 v2.0)
- Exploited in the wild: yes — in CISA KEV since 2021-11-03
- EPSS: 38.9% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2020-08-17 · updated 2026-06-17
- Weakness: CWE-347
Description
A spoofing vulnerability exists when Windows incorrectly validates file signatures. An attacker who successfully exploited this vulnerability could bypass security features and load improperly signed files. In an attack scenario, an attacker could bypass security features intended to prevent improperly signed files from being loaded. The update addresses the vulnerability by correcting how Windows validates file signatures.
Affected products
- Microsoft Windows 10 Version 1507: all versions
- Microsoft Windows 10 1607: all versions
- Microsoft Windows 10 1709: all versions
- Microsoft Windows 10 1803: all versions
- Microsoft Windows 10: all versions
- Microsoft Windows 10 1903: all versions
- Microsoft Windows 10 1909: all versions
- Microsoft Windows 10 2004: all versions
- Microsoft Windows 7: all versions
- Microsoft Windows 8.1: all versions
- Microsoft Windows RT 8.1: all versions
- Microsoft Windows Server 1903: all versions
- Microsoft Windows Server 1909: all versions
- Microsoft Windows Server 2004: all versions
- Microsoft Windows Server 2008: r2-sp1
- Microsoft Windows Server 2012: r2
- Microsoft Windows Server 2016: all versions
- Microsoft Windows Server 2019: all versions
- Microsoft Windows 10 Version 1507: from 10.0.0 before publication — fixed in publication
- Microsoft Windows 10 1607: from 10.0.0 before publication — fixed in publication
- Microsoft Windows 10 1709: from 10.0.0 before publication — fixed in publication
- Microsoft Windows 10 Version 1709 for 32-bit Systems: from 10.0.0 before publication — fixed in publication
- Microsoft Windows 10 1803: from 10.0.0 before publication — fixed in publication
- Microsoft Windows 10: from 10.0.0 before publication — fixed in publication
- Microsoft Windows 10 Version 1903 for 32-bit Systems: from 10.0.0 before publication — fixed in publication
- Microsoft Windows 10 Version 1903 for ARM64-based Systems: from 10.0.0 before publication — fixed in publication
- Microsoft Windows 10 Version 1903 for x64-based Systems: from 10.0.0 before publication — fixed in publication
- Microsoft Windows 10 1909: from 10.0.0 before publication — fixed in publication
- Microsoft Windows 10 2004: from 10.0.0 before publication — fixed in publication
- Microsoft Windows 7: from 6.1.0 before publication — fixed in publication
How to fix
Upgrade to a fixed version: Microsoft Windows 10 Version 1507 publication; Microsoft Windows 10 1607 publication; Microsoft Windows 10 1709 publication; Microsoft Windows 10 Version 1709 for 32-bit Systems publication; Microsoft Windows 10 1803 publication; Microsoft Windows 10 publication; Microsoft Windows 10 Version 1903 for 32-bit Systems publication; Microsoft Windows 10 Version 1903 for ARM64-based Systems publication; Microsoft Windows 10 Version 1903 for x64-based Systems publication; Microsoft Windows 10 1909 publication; Microsoft Windows 10 2004 publication; Microsoft Windows 7 publication. Check the vendor advisory for mitigations.
References
- https://blog.virustotal.com/2019/01/distribution-of-malicious-jar-appended.html
- https://krebsonsecurity.com/2020/08/microsoft-put-off-fixing-zero-day-for-2-years/
- https://medium.com/%40TalBeerySec/glueball-the-story-of-cve-2020-1464-50091a1f98bd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1464
- https://blog.virustotal.com/2019/01/distribution-of-malicious-jar-appended.html
- https://krebsonsecurity.com/2020/08/microsoft-put-off-fixing-zero-day-for-2-years/
- https://medium.com/%40TalBeerySec/glueball-the-story-of-cve-2020-1464-50091a1f98bd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1464
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1464
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