What is CVE-2021-0311?

CVE-2021-0311 is a medium-severity vulnerability in Google Android, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2021-01-11.

How severe is CVE-2021-0311?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2021-0311 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Google Android

CVE-2021-0311

In ElementaryStreamQueue::dequeueAccessUnitH264() of ESQueue.cpp, there is a possible out of bounds write due to a missing bounds check. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation. Product: Android; Versions: Android-9, Android-10, Android-11, Android-8.0, Android-8.1; Android ID: A-170240631.

Vulnerability class: Buffer Overflow

EPSS: 0.011 (62.2th percentile) — read the EPSS interpretation.

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:H/I:N/A:N.

Affected products

Google Android — versions 8.0, 8.1, 9.0
N/a Android — versions Android-9, Android-10, Android-11

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

TinyNiko/android_

References

security@android.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2021-0311?: CVE-2021-0311 is a medium-severity vulnerability in Google Android, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2021-01-11.
How severe is CVE-2021-0311?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2021-0311 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.