CVE-2019-15947: Bitcoin Core

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

In Bitcoin Core 0.18.0, bitcoin-qt stores wallet.dat data unencrypted in memory. Upon a crash, it may dump a core file. If a user were to mishandle a core file, an attacker can reconstruct the user's wallet.dat file, including their private keys, via a grep "6231 0500" command.

Affected products

• Bitcoin Bitcoin Core: version 0.18.0 only

Published 2019-09-05. Last modified 2026-06-17.