CVE-2026-59650

Bouncycastle · Published August 3, 2026

9.1

CVSS v3.1

CRITICAL

Patch availableGet patch

Description

In Bouncy Castle for Java before 1.85, MTI/A0 DH agreement exponentiates unvalidated peer value. This issue also affects Bouncy Castle for Java LTS before 2.73.12.

Affected Products

BC Java < 1.85
Bouncy Castle FOR Java LTS <= 2.73.11

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N