CVE-2021-39680: Google Android

Medium severity, CVSS 4.4. EPSS: 0.1% chance of exploitation in the next 30 days.

In sec_SHA256_Transform of sha256_core.c, there is a possible way to read heap data due to uninitialized data. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-197965864References: N/A

Affected products

• Google Android: affected versions not specified

Published 2022-01-14. Last modified 2026-06-17.