Is CVE-2023-20939 actively exploited?

No active exploitation of CVE-2023-20939 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-20939 be exploited remotely?

No. CVE-2023-20939 requires local access to exploit.

What is the CVSS score of CVE-2023-20939?

CVE-2023-20939 has a CVSS score of 7.8 (HIGH).

HOME VULNERABILITIESCVE-2023-20939

HIGH

CVE-2023-20939

CWE-667Published: February 28, 2023· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official Description

In multiple functions of looper_backed_event_loop.cpp, there is a possible way to corrupt memory 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-12 Android-12L Android-13Android ID: A-243362981

NVD Source

Technical Analysis

CVE-2023-20939 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.