CVE-2020-0601
Microsoft Windows CryptoAPI Spoofing Vulnerability
- Published
- Jan 14, 2020
- Updated
- Oct 21, 2025
- Assigning CNA
- microsoft
- Evidence observed
- Jan 15, 2020
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:NHigh · next 30 days
- Percentile
- 99.8%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
Summary
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'.
Sources
31- cve-2020-0601-pluginDetection
Zeek package that uses OpenSSL to detect CVE-2020-0601 exploit attempts
- cve-2020-0601-utilsDetection
C++ based utility to check if certificates are trying to exploit CVE-2020-0601
- gringottsPoC
proof of concept for CVE-2020-0601
Responsible use
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