What is CVE-2023-21242?

CVE-2023-21242 is a critical-severity vulnerability in Google Android. CVSS score: 9.8/10. Published 2023-08-14.

How severe is CVE-2023-21242?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Google Android

CVE-2023-21242

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.

EPSS: 0.004 (36.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Google Android — versions 13, 13.0

References

security@android.com (Patch)
security@android.com (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2023-21242?: CVE-2023-21242 is a critical-severity vulnerability in Google Android. CVSS score: 9.8/10. Published 2023-08-14.
How severe is CVE-2023-21242?: Critical severity. CVSS v3 base score is 9.8 out of 10.