{"cve":"CVE-2020-0601","nvd":{"published":"2020-01-14T23:15:30.207","modified":"2026-06-17T02:46:08.127","status":"Analyzed","description":"A spoofing vulnerability exists in the way Windows CryptoAPI (Crypt32.dll) validates Elliptic Curve Cryptography (ECC) certificates.An attacker could exploit the vulnerability by using a spoofed code-signing certificate to sign a malicious executable, making it appear the file was from a trusted, legitimate source, aka 'Windows CryptoAPI Spoofing Vulnerability'.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","score":8.1},"cwes":["CWE-295"],"references":["http://packetstormsecurity.com/files/155960/CurveBall-Microsoft-Windows-CryptoAPI-Spoofing-Proof-Of-Concept.html","http://packetstormsecurity.com/files/155961/CurveBall-Microsoft-Windows-CryptoAPI-Spoofing-Proof-Of-Concept.html","https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0601","http://packetstormsecurity.com/files/155960/CurveBall-Microsoft-Windows-CryptoAPI-Spoofing-Proof-Of-Concept.html","http://packetstormsecurity.com/files/155961/CurveBall-Microsoft-Windows-CryptoAPI-Spoofing-Proof-Of-Concept.html"],"products":["golang:go","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_server_1803","microsoft:windows_server_1903","microsoft:windows_server_1909","microsoft:windows_server_2016","microsoft:windows_server_2019"],"source":"nvd","synced_at":"2026-10-19T21:01:01.339895972+00:00"},"epss":{"cve":"CVE-2020-0601","score":0.89078,"percentile":0.9978,"date":"2026-10-31"},"kev":{"cve":"CVE-2020-0601","date_added":"2021-11-03","due_date":"2022-05-03","vendor":"Microsoft","product":"Windows","known_ransomware":false},"osv":[{"id":"GO-2022-0535","url":"https://osv.dev/vulnerability/GO-2022-0535","summary":"Certificate validation bypass on Windows in crypto/x509","modified":"2024-05-20T16:03:47Z","packages":[{"ecosystem":"Go","name":"stdlib","purl":"pkg:golang/stdlib","ranges":["<1.12.16",">=1.13.0-0 <1.13.7"],"fixed":["1.12.16","1.13.7"]}]}],"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."]}