CVE-2022-20377

Name: CVE-2022-20377
Creator: NVD / NIST
Published: 2022-08-11T15:15:11.047+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.7/10EPSS 0.10%

Last modified Jun 17, 2026

CVE-2022-20377 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. In TBD of keymaster_ipc.cpp, there is a possible to force gatekeeper, fingerprint, and faceauth to use a known HMAC key. This could lead to local escalation of privilege with no additional execution privileges needed. EPSS estimates a 0.10% chance of exploitation in the next 30 days.

Description

In TBD of keymaster_ipc.cpp, there is a possible to force gatekeeper, fingerprint, and faceauth to use a known HMAC key. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-222339795References: N/A

Metrics

CVSS 3.1

6.7/10

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

EPSS Probability

0.10%

1.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Google	Android	All versions

References

https://source.android.com/security/bulletin/pixel/2022-08-01Vendor Advisory
https://source.android.com/security/bulletin/pixel/2022-08-01Vendor Advisory

Timeline

Published: Aug 11, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-20377?

How severe is CVE-2022-20377?

CVE-2022-20377 has a CVSS score of 6.7/10 (MEDIUM severity). The EPSS model estimates a 0.10% probability of exploitation in the next 30 days.

How do I fix CVE-2022-20377?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-20377?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST