Is CVE-2023-21263 actively exploited?

No active exploitation of CVE-2023-21263 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-21263 be exploited remotely?

Yes. CVE-2023-21263 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-21263?

CVE-2023-21263 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-21263

CRITICAL

CVE-2023-21263

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

9.8

CVSS v3.1

Official Description

In OSMMapPMRGeneric of pmr_os.c, there is a possible out of bounds write due to an uncaught exception. 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

An uncaught exception causes an out-of-bounds write in the kernel, potentially leading to local privilege escalation. This critical vulnerability is rated 9.8 on the CVSS scale.

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

Recommended Action

Update affected Android devices with the latest security patches.

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-2023-21263 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.