# CVE-2020-1464: Microsoft Windows Spoofing Vulnerability

Source: https://junglewise.ai/threats/cve-2020-1464-microsoft-windows-spoofing-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2021-11-03. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2020-1464 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2021-11-03

A spoofing vulnerability exists in Microsoft Windows due to incorrect validation of file signatures. An attacker can exploit this to bypass security features and load improperly signed files, effectively circumventing protections intended to verify software authenticity.

Technologies: [Microsoft Windows](https://junglewise.ai/threats/technologies/windows). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2020-1464 exploited in the wild?** Yes. CVE-2020-1464 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.

**How severe is CVE-2020-1464?** Critical severity, with a CVSS score of 7.8, published 3 November 2021.

**Which products and versions are affected?** Microsoft Windows 10 1507, 1607, 1709, 1803, 1809, 1903, 1909, 2004; Microsoft Windows 7 SP1; Microsoft Windows 8.1; Microsoft Windows RT 8.1; and 4 more.

**Is there a fix for CVE-2020-1464?** A patch was published on 2020-08-11: Microsoft released security updates to address the vulnerability. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2020-1464 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2020-1464?** Check whether you run Microsoft Windows. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Microsoft Windows 10 1507, 1607, 1709, 1803, 1809, 1903, 1909, 2004
- Microsoft Windows 7 SP1
- Microsoft Windows 8.1
- Microsoft Windows RT 8.1
- Microsoft Windows Server 2008 SP2, R2 SP1
- Microsoft Windows Server 2012 R2
- Microsoft Windows Server 2016 1903, 1909, 2004
- Microsoft Windows Server 2019

## Timeline

- 2019-01: other: Earliest public discussion of related malicious JAR distribution techniques.
- 2020-08-11: patched: Microsoft released security updates to address the vulnerability.
- 2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog.
- 2021-11-03: disclosed

## Related threats

- [Windows BitLocker heap buffer overflow with physical attack](https://junglewise.ai/threats/cve-2026-97015-heap-based-buffer-overflow-in-windows-bitlocker-allows-an)
- [Microsoft Windows Shell type confusion privilege elevation](https://junglewise.ai/threats/cve-2026-97013-access-of-resource-using-incompatible-type-type-confusion-in)
- [Microsoft Windows VMSwitch out-of-bounds read privilege escalation](https://junglewise.ai/threats/cve-2026-97002-out-of-bounds-read-in-windows-vmswitch-allows-an-authorized)
- [Microsoft Windows USM Communication Manager null pointer dereference](https://junglewise.ai/threats/cve-2026-97000-null-pointer-dereference-in-windows-usm-communication-manager)
- [Microsoft Windows Winsock use after free privilege escalation](https://junglewise.ai/threats/cve-2026-96994-use-after-free-in-winsock-allows-an-authorized-attacker-to)