CVE-2021-45700: Nervos Ckb

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

An issue was discovered in the ckb crate before 0.40.0 for Rust. Attackers can cause a denial of service (Nervos CKB blockchain node crash) via a dead call that is used as a DepGroup.

Affected products

• Nervos Ckb: before 0.40.0 (fixed in 0.40.0)

Published 2021-12-27. Last modified 2026-06-17.