CVE-2023-21504: Samsung Android

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

Potential buffer overflow vulnerability in mm_Plmncoordination.c in Shannon baseband prior to SMR May-2023 Release 1 allows remote attackers to cause invalid memory access.

Affected products

• Samsung Android: version 11.0 only; version 12.0 only; version 13.0 only

Published 2023-05-04. Last modified 2026-06-17.