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    CVE-2026-40618

    When an SSL profile is configured on a virtual server on BIG-IP Virtual Edition (VE) without Intel QuickAssist Technology (QAT) or on BIG-IP hardware platforms with the database variable crypto.hwacceleration set to disabled, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate.   Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

    Published:May 13, 2026
    Last Modified:May 14, 2026
    EPS:May 13, 2026
    EPSS Score:0.00072
    CVSS Score:7.5

    Affected Products

    Vendor
    F5
    Product
    Big-ip
    Vendor
    F5
    Product
    Big-ip Next Cnf
    Vendor
    F5
    Product
    Big-ip Next For Kubernetes
    Vendor
    F5
    Product
    Big-ip Next Spk

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-100 Overflow Buffers
    CAPEC-47 Buffer Overflow via Parameter Expansion

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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