{"id":"CVE-2020-0601","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-0601","generatedAt":"2026-10-31T17:25:37.154Z","title":"Microsoft Windows CryptoAPI Spoofing Vulnerability","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'.","published":"2020-01-14T23:15:30.000Z","lastModified":"2026-06-17T02:46:08.000Z","status":"Analyzed","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.1","score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"},"cwe":["CWE-295"],"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 server 1803","microsoft/windows server 1903","microsoft/windows server 1909","microsoft/windows server 2016","microsoft/windows server 2019","golang/go"],"epss":{"score":0.89078,"percentile":0.99779,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2021-11-03","dueDate":"2022-05-03","knownRansomwareCampaignUse":"Unknown","notes":"Apply updates per vendor instructions.\nReference CISA's ED 20-02 (https://www.cisa.gov/news-events/directives/ed-20-02-mitigate-windows-vulnerabilities-january-2020-patch-tuesday) for further guidance and requirements. Note: The due date for addressing this vulnerability aligns with the requirements outlined in ED 20-02. https://nvd.nist.gov/vuln/detail/CVE-2020-0601"},"exploits":{"count":1,"verified":false,"firstPublished":"2020-01-15","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":47933,"kind":"exploit","title":"Microsoft Windows - CryptoAPI (Crypt32.dll) Elliptic Curve Cryptography (ECC) Spoof Code-Signing Certificate","url":"https://www.exploit-db.com/exploits/47933","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/47933.rb","file":"exploits/windows/local/47933.rb","published":"2020-01-15","added":"2020-01-16","updated":"2020-01-16","author":"Oliver Lyak","type":"local","platform":"windows","port":null,"verified":false,"codes":["CVE-2020-0601"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://github.com/ollypwn/cve-2020-0601/tree/d957153ee016c69674769b64bf87b49f7d91120e"}]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 3 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/155960/CurveBall-Microsoft-Windows-CryptoAPI-Spoofing-Proof-Of-Concept.html","tags":["Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"http://packetstormsecurity.com/files/155961/CurveBall-Microsoft-Windows-CryptoAPI-Spoofing-Proof-Of-Concept.html","tags":["Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0601","tags":["Patch","Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"http://packetstormsecurity.com/files/155960/CurveBall-Microsoft-Windows-CryptoAPI-Spoofing-Proof-Of-Concept.html","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/155961/CurveBall-Microsoft-Windows-CryptoAPI-Spoofing-Proof-Of-Concept.html","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0601","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-0601","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-0601","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}