CVE-2024-29857: Bouncycastle Bc-Fja

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

An issue was discovered in ECCurve.java and ECCurve.cs in Bouncy Castle Java (BC Java) before 1.78, BC Java LTS before 2.73.6, BC-FJA before 1.0.2.5, and BC C# .Net before 2.3.1. Importing an EC certificate with crafted F2m parameters can lead to excessive CPU consumption during the evaluation of the curve parameters.

Affected products

• Bouncycastle Bc-Fja: up to and including 1.0.2.4
• Bouncycastle Bc-Java: up to and including 1.77
• Bouncycastle Bc C .net: up to and including 2.3.0

Published 2024-05-14. Last modified 2026-06-17.