VULNERABILITY INTELLIGENCE

CVE-2020-11005

CVSS score5.1 MEDIUM

EPSS probability0.23%

CISA KEVNot currently listed

Published2020-04-14

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Description

The WindowsHello open source library (NuGet HaemmerElectronics.SeppPenner.WindowsHello), before version 1.0.4, has a vulnerability where encrypted data could potentially be decrypted without needing authentication. If the library is used to encrypt text and write the output to a txt file, another executable could be able to decrypt the text using the static method NCryptDecrypt from this same library without the need to use Windows Hello Authentication again. This has been patched in version 1.0.4.

Weakness classification

CWE-288: Authentication Bypass Using an Alternate Path or Channel
CWE-327: Use of a Broken or Risky Cryptographic Algorithm

Primary references

security-advisories@github.com — Issue Tracking, Third Party Advisory
security-advisories@github.com — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory