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CVE-2020-0601

Known Exploited (CISA KEV)HIGH
8.1
CVSS Severity Score
EPSS Score50.1730%
EPSS Percentile96.67th
PublishedJan 14, 2020
Last ModifiedDec 18, 2025

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'.

Affected Platforms (CPE)

💻
Microsoft

Windows 10 1507

All versions
💻
Microsoft

Windows 10 1507

All versions
💻
Microsoft

Windows 10 1607

All versions
💻
Microsoft

Windows 10 1607

All versions
💻
Microsoft

Windows 10 1709

All versions
💻
Microsoft

Windows 10 1709

All versions
💻
Microsoft

Windows 10 1709

All versions
💻
Microsoft

Windows 10 1803

All versions
💻
Microsoft

Windows 10 1803

All versions
💻
Microsoft

Windows 10 1803

All versions
💻
Microsoft

Windows 10 1809

All versions
💻
Microsoft

Windows 10 1809

All versions
💻
Microsoft

Windows 10 1809

All versions
💻
Microsoft

Windows 10 1903

All versions
💻
Microsoft

Windows 10 1903

All versions
💻
Microsoft

Windows 10 1903

All versions
💻
Microsoft

Windows 10 1909

All versions
💻
Microsoft

Windows 10 1909

All versions
💻
Microsoft

Windows 10 1909

All versions
💻
Microsoft

Windows Server 1803

All versions
💻
Microsoft

Windows Server 1903

All versions
💻
Microsoft

Windows Server 1909

All versions
💻
Microsoft

Windows Server 2016

All versions
💻
Microsoft

Windows Server 2019

All versions
📦
Golang

Go

>= 1.12 and < 1.12.16
📦
Golang

Go

>= 1.13 and < 1.13.7

References & Advisories

🔗 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
🔗 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0601
🔗 https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-0601

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