Is CVE-2023-21163 actively exploited?

No active exploitation of CVE-2023-21163 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-21163 be exploited remotely?

Yes. CVE-2023-21163 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-21163?

CVE-2023-21163 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-21163

CRITICAL

CVE-2023-21163

NVD-CWE-noinfoPublished: December 4, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

In PMR_ReadBytes of pmr.c, there is a possible arbitrary code execution due to a use after free. This could lead to local escalation of privilege in the kernel with no additional execution privileges needed. User interaction is not needed for exploitation.

NVD Source

Risk Analysis

A use-after-free vulnerability in the kernel's memory handling could result in arbitrary code execution. This critical issue carries a 9.8 CVSS score and permits local privilege escalation without user interaction.

No public exploit is currently known, and it is not included in the CISA KEV. It is remotely exploitable.

Recommended Action

Update the affected Android device to the latest available security version.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-21163 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

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 9.8.