{"schema_version":"1","data":[{"id":3660,"advisory_id":"dfee5fbc-57bf-4cfd-b7d7-476f4ec1aff4","revision":1,"source_id":"core-kev","source_url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-0601","source_published_at":"2021-11-03T00:00:00+00:00","published_at":"2026-10-24T21:39:19.22435+00:00","extraction_method":"structured","technologies":["core-kev","windows"],"cve_ids":["CVE-2020-0601"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"Microsoft Windows CryptoAPI Spoofing Vulnerability","summary":"Microsoft Windows CryptoAPI (Crypt32.dll) contains a spoofing vulnerability in the way it 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. A successful exploit could also allow the attacker to conduct man-in-the-middle attacks and decrypt confidential information on user connections to the affected software. The vulnerability is also known under the moniker of CurveBall. CISA required action: Apply updates per vendor instructions.","evidence":"kev:CVE-2020-0601","products":[{"name":{"value":"Windows","evidence":"/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"unknown","structured":{"id":"CVE-2020-0601","aliases":["CVE-2020-0601"],"affected":[],"modified":"2021-11-03T00:00:00.000Z","provider":"kev","references":["https://www.cisa.gov/known-exploited-vulnerabilities-catalog"],"exploitation":{"cwes":["CWE-295"],"cveID":"CVE-2020-0601","notes":"Reference 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","dueDate":"2022-05-03","product":"Windows","dateAdded":"2021-11-03","vendorProject":"Microsoft","requiredAction":"Apply updates per vendor instructions.","known_exploited":true,"shortDescription":"Microsoft Windows CryptoAPI (Crypt32.dll) contains a spoofing vulnerability in the way it 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. A successful exploit could also allow the attacker to conduct man-in-the-middle attacks and decrypt confidential information on user connections to the affected software. The vulnerability is also known under the moniker of CurveBall.","vulnerabilityName":"Microsoft Windows CryptoAPI Spoofing Vulnerability","knownRansomwareCampaignUse":"Unknown"}},"related_cves":[{"value":"CVE-2020-0601","evidence":"/cveID"}],"security_relevant":true,"severity_evidence":null}}],"next_after":3660,"next_before":3660}