CVE-2023-21511: Samsung Blockchain Keystore

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

Out-of-bounds Read vulnerability while processing CMD_COLDWALLET_BTC_SET_PRV_UTXO in bc_core trustlet from Samsung Blockchain Keystore prior to version 1.3.12.1 allows local attacker to read arbitrary memory.

Affected products

• Samsung Samsung Blockchain Keystore: before 1.3.12.1 (fixed in 1.3.12.1)

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