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 wa
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'.
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows | 10 Version 1803 for 32-bit Systems, 10 Version 1803 for x64-based Systems, 10 Version 1803 for ARM64-based Systems, 10 Version 1809 for 32-bit Systems, 10 Version 1809 for x64-based Systems, 10 Version 1809 for ARM64-based Systems, 10 Version 1709 for 32-bit Systems, 10 Version 1709 for x64-based Systems, 10 Version 1709 for ARM64-based Systems, 10 for 32-bit Systems, 10 for x64-based Systems, 10 Version 1607 for 32-bit Systems, 10 Version 1607 for x64-based Systems |
| Microsoft | Windows Server | version 1803 (Core Installation), 2019, 2019 (Core installation), 2016, 2016 (Core installation) |
| Microsoft | Windows 10 Version 1903 for 32 | bit Systems — unspecified |
| Microsoft | Windows 10 Version 1903 for x64 | based Systems — unspecified |
| Microsoft | Windows 10 Version 1903 for ARM64 | based Systems — unspecified |
| Microsoft | Windows Server, version 1903 (Server Core installation) | unspecified |
| Microsoft | Windows 10 Version 1909 for 32 | bit Systems — unspecified |
| Microsoft | Windows 10 Version 1909 for x64 | based Systems — unspecified |
| Microsoft | Windows Server, version 1909 (Server Core installation) | unspecified |
| Microsoft | Windows 10 Version 1909 for ARM64 | based Systems — unspecified |
Yes — actively exploited. Added to the CISA KEV catalog on 2021-11-03. Ransomware use: Unknown.
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.