How severe is CVE-2020-11005?

CVE-2020-11005 has a CVSS 3.x base score of 5.1, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-11005 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-11005?

CVE-2020-11005 affects Windowshello Project Windowshello. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-11005?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-11005 published?

CVE-2020-11005 was published on 2020-04-14 and last updated on 2026-06-17.

CVE-2020-11005

CVE-2020-11005 is a medium-severity vulnerability in Windowshello Project Windowshello with a CVSS 3.x base score of 5.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-327.

Key facts

Severity: Medium (CVSS 3.x base score 5.1)
CVSS v2: 2.1
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-327
Affected product: Windowshello Project Windowshello
Published: 2020-04-14
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2020-11005?: CVE-2020-11005 has a CVSS 3.x base score of 5.1, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-11005 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-11005?: CVE-2020-11005 affects Windowshello Project Windowshello. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-11005?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-11005 published?: CVE-2020-11005 was published on 2020-04-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:windowshello_project:windowshello:*:*:*:*:*:*:*:*

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