Is CVE-2023-21166 actively exploited?

No active exploitation of CVE-2023-21166 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-21166 be exploited remotely?

Yes. CVE-2023-21166 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-21166?

CVE-2023-21166 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-21166

CRITICAL

CVE-2023-21166

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

9.8

CVSS v3.1

Official Description

In RGXBackingZSBuffer of rgxta3d.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 exists in the kernel, potentially leading to arbitrary code execution. With a CVSS score of 9.8, this critical flaw allows for local privilege escalation without any user interaction.

No public exploit is known, and the vulnerability is not in the CISA KEV. It is considered remotely exploitable based on the provided attack vector.

Recommended Action

Apply the latest Android security patches to resolve the underlying memory management defect.

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-2023-21166 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.