HIGHCVSS v3.1 8.1Actively exploited · CISA KEV since 2021-11-03Vulnerability
CVE-2020-0601
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.
Properties
- Euvd product
- Windows, Windows 10 Version 1903 for 32-bit Systems, Windows Server, version 1909 (Server Core installation), Windows Server, Windows 10 Version 1909 for ARM64-based Systems, Windows 10 Version 1903 for ARM64-based Systems, Windows 10 Version 1909 for x64-based Systems, Windows 10 Version 1903 for x64-based Systems, Windows Server, version 1903 (Server Core installation), Windows 10 Version 1909 for 32-bit Systems
- Vulnerability name
- Microsoft Windows CryptoAPI Spoofing Vulnerability
- First seen
- 2025-10-21T23:35:53+00:00
- Cvss score
- 8.1
- Epss score
- 0.89436
- Last seen
- 2026-10-19T12:00:27+00:00
- Due date
- 2022-05-03
- Euvd assigner
- microsoft
- Retrieved at
- 2026-10-21T01:24:47+00:00
- Exploited euvd since
- 2021-11-03T00:00:00+00:00
- Src batch id
- epss_history-20261020T103617Z-728ddd
- Source url
- https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
- Date added
- 2021-11-03
- Score
- 8.1
- Euvd base score version
- 3.1
- Fetched at
- 2026-10-20T10:36:20+00:00
- Euvd vendor
- Microsoft
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- In Signal since
- initial import (Sep 2026)
- Euvd base score
- 8.1
Related Entities (29 · showing 23)
AFFECTS_PRODUCT (26 · showing 20)
DESCRIBES (1)
HAS_WEAKNESS (1)
INVOLVES (1)
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