CVE-2025-21043: Samsung Mobile Devices Out-of-Bounds Write Vulnerability

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2025-10-02. EPSS: 2.1% chance of exploitation in the next 30 days.

Out-of-bounds write in libimagecodec.quram.so prior to SMR Sep-2025 Release 1 allows remote attackers to execute arbitrary code.

Affected products

• Samsung Android: version 13.0 only; version 14.0 only; version 15.0 only; version 16.0 only

Published 2025-09-12. Last modified 2026-10-08.