Is CVE-2023-21242 actively exploited?

No active exploitation of CVE-2023-21242 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-21242 be exploited remotely?

Yes. CVE-2023-21242 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-21242?

CVE-2023-21242 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-21242

CRITICAL

CVE-2023-21242

NVD-CWE-noinfoPublished: August 14, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

In isServerCertChainValid of InsecureEapNetworkHandler.java, there is a possible way to trust an imposter server due to a logic error in the code. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

NVD Source

Risk Analysis

A logic error in the EAP network handler allows an attacker to spoof a server, leading to remote privilege escalation. The critical 9.8 CVSS score reflects the ease of exploitation without user interaction or special privileges.

No public exploit is known, and the vulnerability is not in the CISA KEV catalog. It is remotely exploitable with low attack complexity.

Recommended Action

Update to the latest security patch level for Android 13.

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-2023-21242 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.