CVE-2020-1464
Windows Spoofing Vulnerability
- High 7.8
- Exploited: added to CISA KEV 3 Nov 2021
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.
Key facts
- Published
- 17 Aug 2020
- Last changed
- 21 Oct 2025
- Assigned by
- microsoft
- KEV added
- 3 Nov 2021
- KEV fix due
- 3 May 2022
- EPSS
- 38.946% likely to be exploited in the next 30 days, higher than 98.613% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: no; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 7.8CVSS 3.1, Highfrom the CNA (microsoft)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
What to do
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1803 |
|
| Microsoft | Windows 10 Version 1809 |
|
| Microsoft | Windows Server 2019 |
|
| Microsoft | Windows Server 2019 (Server Core installation) |
|
| Microsoft | Windows 10 Version 1909 |
|
| Microsoft | Windows Server, version 1909 (Server Core installation) |
|
| Microsoft | Windows 10 Version 1709 for 32-bit Systems |
|
| Microsoft | Windows 10 Version 1709 |
|
| 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) |
|
| Microsoft | Windows 10 Version 2004 |
|
| Microsoft | Windows Server version 2004 |
|
| Microsoft | Windows 10 Version 1507 |
|
| Microsoft | Windows 10 Version 1607 |
|
| Microsoft | Windows Server 2016 |
|
| Microsoft | Windows Server 2016 (Server Core installation) |
|
| Microsoft | Windows 7 |
|
| Microsoft | Windows 7 Service Pack 1 |
|
| Microsoft | Windows 8.1 |
|
| Microsoft | Windows Server 2008 Service Pack 2 |
|
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) |
|
| Microsoft | Windows Server 2008 Service Pack 2 |
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 |
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) |
|
| Microsoft | Windows Server 2012 |
|
| Microsoft | Windows Server 2012 (Server Core installation) |
|
| Microsoft | Windows Server 2012 R2 |
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
|
Timeline
- 17 Aug 2020 Published
- 3 Nov 2021 CVE-2020-1464 added to CISA KEV
- 3 Nov 2021 Added to the CISA KEV catalogue