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    CVE-2026-59646

    In Bouncy Castle for Java before 1.85, DTLS handshake reassembler allocates buffer from unchecked 24-bit length. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bctls-fips 1.0.24 (1.0.X series), 2.0.24 (2.0.X series) and 2.1.24 (2.1.X series).

    Published:Aug 3, 2026
    Last Modified:Aug 28, 2026
    EPS:Aug 3, 2026
    EPSS Score:0.00308
    CVSS Score:7.5

    Affected Products

    Vendor
    Bouncycastle
    Product
    Bc-java
    Vendor
    Bouncycastle
    Product
    Bctls-fips
    Vendor
    Bouncycastle
    Product
    Bouncy Castle For Java Lts
    Vendor
    Legion Of The Bouncy Castle Inc.
    Product
    Bc-fja
    Vendor
    Legion Of The Bouncy Castle Inc.
    Product
    Bc-java
    Vendor
    Legion Of The Bouncy Castle Inc.
    Product
    Bc-lts-java

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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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