CVE-2020-1464Windows Spoofing Vulnerability
- 7.8HighCVSS base score
- 38.9%Exploitation in 30 daysEPSS · top 1.4% of all CVEs
- YesKnown exploitedin CISA's KEV since 3 Nov 2021
- YesPublic exploitsa reference or SSVC says so
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.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Microsoft Windows Spoofing Vulnerability.
- Added
- 3 Nov 2021
- Fix due (US federal)
- 3 May 2022
- Used by ransomware
- Not known
Apply updates per vendor instructions.
ENISA's EU Vulnerability Database lists it as exploited, from CISA's KEV, since 3 Nov 2021.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: it is being exploited.
Timeline
ID reserved
By microsoft
- 10 months later
· 10 months later
Published
- 15 months later
· 15 months later
Added to CISA KEV
Known exploited in the wild
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| microsoftCNA (assigner) | 3.1 | High7.8 | 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 |
| NVDNVD · Analyzed | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 38.9% · top 1.4% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
Microsoft · Windows 10 Version 1803
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1809
- affected 10.0.0 – < publication
Microsoft · Windows Server 2019
- affected 10.0.0 – < publication
Microsoft · Windows Server 2019 (Server Core installation)
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1909
- affected 10.0.0 – < publication
Microsoft · Windows Server, version 1909 (Server Core installation)
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1709 for 32-bit Systems
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1709
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1903 for 32-bit Systems
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1903 for x64-based Systems
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1903 for ARM64-based Systems
- affected 10.0.0 – < publication
Microsoft · Windows Server, version 1903 (Server Core installation)
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 2004
- affected 10.0.0 – < publication
Microsoft · Windows Server version 2004
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1507
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1607
- affected 10.0.0 – < publication
Microsoft · Windows Server 2016
- affected 10.0.0 – < publication
Microsoft · Windows Server 2016 (Server Core installation)
- affected 10.0.0 – < publication
- affected 6.1.0 – < publication
Microsoft · Windows 7 Service Pack 1
- affected 6.1.0 – < publication
- affected 6.3.0 – < publication
Microsoft · Windows Server 2008 Service Pack 2
- affected 6.0.0 – < publication
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)
- affected 6.0.0 – < publication
Microsoft · Windows Server 2008 Service Pack 2
- affected 6.0.0 – < publication
Microsoft · Windows Server 2008 R2 Service Pack 1
- affected 6.1.0 – < publication
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)
- affected 6.0.0 – < publication
Microsoft · Windows Server 2012
- affected 6.2.0 – < publication
Microsoft · Windows Server 2012 (Server Core installation)
- affected 6.2.0 – < publication
Microsoft · Windows Server 2012 R2
- affected 6.3.0 – < publication
Microsoft · Windows Server 2012 R2 (Server Core installation)
- affected 6.3.0 – < publication
References
References5
- https://medium.com/%40TalBeerySec/glueball-the-story-of-cve-2020-1464-50091a1f98bd (opens in a new tab)x_refsource_MISCx_transferred
- https://krebsonsecurity.com/2020/08/microsoft-put-off-fixing-zero-day-for-2-years/ (opens in a new tab)x_refsource_MISCx_transferred
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1464 (opens in a new tab)x_refsource_MISCx_transferred
- https://blog.virustotal.com/2019/01/distribution-of-malicious-jar-appended.html (opens in a new tab)x_refsource_MISCx_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1464 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2020-12339 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-1464)Record last updated .