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    CVE-2026-5598

    Covert timing channel vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA core on all (core modules). This vulnerability is associated with program files FrodoEngine.Java. This issue affects BC-JAVA: from 1.71 before 1.80.2, from 1.81 before 1.81.1, from 1.82 before 1.84.

    Published:Apr 15, 2026
    Last Modified:Aug 12, 2026
    EPS:Apr 15, 2026
    EPSS Score:0.00691
    CVSS Score:7.5

    Affected Products

    Vendor
    Bouncycastle
    Product
    Bc-java

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-385 Covert Timing Channel

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-462 Cross-Domain Search Timing

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High