CVE-2017-12842: Bitcoin Core

High severity, CVSS 7.5. EPSS: 2.2% chance of exploitation in the next 30 days.

Bitcoin Core before 0.14 allows an attacker to create an ostensibly valid SPV proof for a payment to a victim who uses an SPV wallet, even if that payment did not actually occur. Completing the attack would cost more than a million dollars, and is relevant mainly only in situations where an autonomous system relies solely on an SPV proof for transactions of a greater dollar amount.

Affected products

• Bitcoin Bitcoin Core: before 0.14.0 (fixed in 0.14.0)

Published 2020-03-16. Last modified 2026-06-17.