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    CVE-2026-6731

    X.509 name constraint bypass via the Subject Common Name when treated as a DNS-type name. A certificate whose Subject CN violates an issuing CA's DNS name constraints could be accepted.

    Published:Jun 25, 2026
    Last Modified:Jun 26, 2026
    EPS:Jun 25, 2026
    EPSS Score:0.00154
    CVSS Score:6

    Affected Products

    Vendor
    Wolfssl
    Product
    Wolfssl

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-295 Improper Certificate Validation

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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