CVE-2024-52921: Bitcoin Core

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

In Bitcoin Core before 25.0, a peer can affect the download state of other peers by sending a mutated block.

Affected products

• Bitcoin Bitcoin Core: before 25.0 (fixed in 25.0)

Published 2024-11-18. Last modified 2026-06-17.