CVSS 3.1
7.8 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2020-1464
High (7.8) in Microsoft Windows. In CISA KEV since 2021-11-03. EPSS 39% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 39% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)
- CISA KEV
- listed 2021-11-03, due 2022-05-03
- CWE
- CWE-347
- Published
- Modified
- Record from
- the NVD, synced
Affected
- microsoft:windows_10_1507
- microsoft:windows_10_1607
- microsoft:windows_10_1709
- microsoft:windows_10_1803
- microsoft:windows_10_1809
- microsoft:windows_10_1903
- microsoft:windows_10_1909
- microsoft:windows_10_2004
- microsoft:windows_7
- microsoft:windows_8.1
- microsoft:windows_rt_8.1
- microsoft:windows_server_1903
- microsoft:windows_server_1909
- microsoft:windows_server_2004
- microsoft:windows_server_2008
- microsoft:windows_server_2012
- microsoft:windows_server_2016
- microsoft:windows_server_2019
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