{"cve":"CVE-2020-1464","nvd":{"published":"2020-08-17T19:15:14.867","modified":"2026-06-17T03:01:28.433","status":"Analyzed","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.\nIn an attack scenario, an attacker could bypass security features intended to prevent improperly signed files from being loaded.\nThe update addresses the vulnerability by correcting how Windows validates file signatures.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-347"],"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"],"products":["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"],"source":"nvd","synced_at":"2026-10-19T21:09:20.498348299+00:00"},"epss":{"cve":"CVE-2020-1464","score":0.38946,"percentile":0.9859,"date":"2026-10-31"},"kev":{"cve":"CVE-2020-1464","date_added":"2021-11-03","due_date":"2022-05-03","vendor":"Microsoft","product":"Windows","known_ransomware":false},"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}