CVE-2021-25489: Samsung Mobile Devices Improper Input Validation Vulnerability

Medium severity, CVSS 5.5. Actively exploited: in CISA KEV since 2023-06-29. EPSS: 0.5% chance of exploitation in the next 30 days.

Assuming radio permission is gained, missing input validation in modem interface driver prior to SMR Oct-2021 Release 1 results in format string bug leading to kernel panic.

Affected products

• Samsung Android: version 8.1 only; version 9.0 only; version 10.0 only; version 11.0 only

Published 2021-10-06. Last modified 2026-06-17.