CVE-2023-21120

Name: CVE-2023-21120
Creator: NVD / NIST
Published: 2023-06-15T19:15:09.507+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.07%

Last modified Jun 17, 2026

CVE-2023-21120 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In multiple functions of cdm_engine.cpp, there is a possible use-after-free due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. EPSS estimates a 0.07% chance of exploitation in the next 30 days.

Description

In multiple functions of cdm_engine.cpp, there is a possible use-after-free due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android SoCAndroid ID: A-258188673

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.07%

0.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Google	Android	All versions

References

https://source.android.com/security/bulletin/2023-06-01Vendor Advisory
https://source.android.com/security/bulletin/2023-06-01Vendor Advisory

Timeline

Published: Jun 15, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-21120?

How severe is CVE-2023-21120?

CVE-2023-21120 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.07% probability of exploitation in the next 30 days.

How do I fix CVE-2023-21120?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-21120?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST