What is CVE-2022-20239?

CVE-2022-20239 is a critical-severity vulnerability in Google Android, classified under Externally Controlled Reference to a Resource in Another Sphere. CVSS score: 9.8/10. Published 2022-08-10.

How severe is CVE-2022-20239?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Privilege escalation in Google Android

CVE-2022-20239

remap_pfn_range' here may map out of size kernel memory (for example, may map the kernel area), and because the 'vma->vm_page_prot' can also be controlled by userspace, so userspace may map the kernel area to be writable, which is easy to be exploitedProduct: AndroidVersions: Android SoCAndroid ID: A-233972091

Published 2022-08-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (18.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 18.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Google Android
Android — versions Android SoC

Weakness classification (CWE)

References

source.android.com/security/bulletin/2022-08-01 (Vendor Advisory)

Frequently asked questions

What is CVE-2022-20239?: CVE-2022-20239 is a critical-severity vulnerability in Google Android, classified under Externally Controlled Reference to a Resource in Another Sphere. CVSS score: 9.8/10. Published 2022-08-10.
How severe is CVE-2022-20239?: Critical severity. CVSS v3 base score is 9.8 out of 10.