CVE-2026-59650

Description

A flaw was found in Bouncy Castle for Java. The software fails to validate Diffie-Hellman peer values during key agreement. A remote attacker can exploit this flaw to compromise cryptographic keys, potentially leading to the decryption of sensitive communications or successful impersonation.

Statement

This is an Important vulnerability where Bouncy Castle for Java, as used in Red Hat products, fails to validate Diffie-Hellman peer values during key agreement. This flaw allows a remote attacker to compromise cryptographic keys, potentially leading to the decryption of sensitive communications or successful impersonation, due to the low attack complexity and lack of required user interaction.

Common Vulnerability Scoring System (CVSS) Score Details

Info alert:Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 Score Breakdown

Red HatNVDcve.org
Base Score7.4N/AN/A
Attack VectorNetworkN/AN/A
Attack ComplexityHighN/AN/A
Privileges RequiredNoneN/AN/A
User InteractionNoneN/AN/A
ScopeUnchangedN/AN/A
ConfidentialityHighN/AN/A
Integrity ImpactHighN/AN/A
Availability ImpactNoneN/AN/A

Vector

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

Understanding the Weakness (CWE)

CWE-325

Access Control

Technical Impact: Bypass Protection Mechanism

Confidentiality,Integrity

Technical Impact: Read Application Data; Modify Application Data

Accountability,Non-Repudiation

Technical Impact: Hide Activities

Frequently Asked Questions

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