Auth bypass in Google Android
CVE-2021-39639
In TBD of fvp.c, there is a possible way to glitch CPU behavior due to a missing permission check. This could lead to local escalation of privilege with physical access to device internals with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-198291476References: N/A
Vulnerability class: Broken Access Control
EPSS: 0.001 (2.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Google Android
- N/a Android — versions Android kernel
Weakness classification (CWE)
References
- security@android.com (Patch, x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-39639?
- CVE-2021-39639 is a medium-severity vulnerability in Google Android, classified under Missing Authorization. CVSS score: 6.8/10. Published 2021-12-15.
- How severe is CVE-2021-39639?
- Medium severity. CVSS v3 base score is 6.8 out of 10.