What is CVE-2020-11005?

CVE-2020-11005 is a medium-severity vulnerability in Sepppenner Windowshello, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 5.1/10. Published 2020-04-14.

How severe is CVE-2020-11005?

Medium severity. CVSS v3 base score is 5.1 out of 10.

Vulnerability in Sepppenner Windowshello

CVE-2020-11005

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.

EPSS: 0.002 (14.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.1 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Sepppenner Windowshello — versions < 1.0.4
Windowshello_project Windowshello

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
security-advisories@github.com (Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2020-11005?: CVE-2020-11005 is a medium-severity vulnerability in Sepppenner Windowshello, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 5.1/10. Published 2020-04-14.
How severe is CVE-2020-11005?: Medium severity. CVSS v3 base score is 5.1 out of 10.