NULL pointer dereference in Google Android

CVE-2021-39804

In reinit of HeifDecoderImpl.cpp, there is a possible crash due to a missing null check. This could lead to remote persistent denial of service in the file picker with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-11 Android-12 Android-12LAndroid ID: A-215002587

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (34.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-39804: held from 0.004 to 0.004.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

  • Google Android — versions 11.0, 12.0, 12.1
  • Android — versions Android-11 Android-12 Android-12L

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-39804?
CVE-2021-39804 is a medium-severity vulnerability in Google Android, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2022-04-12.
How severe is CVE-2021-39804?
Medium severity. CVSS v3 base score is 6.5 out of 10.