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    CVE-2026-45498

    Microsoft Defender Denial of Service Vulnerability

    Published:May 20, 2026
    Last Modified:May 26, 2026
    EPS:May 20, 2026
    EPSS Score:0.04106
    CVSS Score:4

    CISA Notification

    Description

    Microsoft Defender Denial of Service Vulnerability

    Required Action:

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

    Notes:

    No extra notes provided.

    Due Date
    Jun 3, 2026
    100 days ago
    Alert Date
    May 20, 2026
    114 days ago

    Affected Products

    Vendor
    Microsoft
    Product
    Defender Antimalware Platform
    Vendor
    Microsoft
    Product
    Microsoft Defender
    Vendor
    Microsoft
    Product
    Windows Defender Antimalware Platform

    Exploits

    https://github.com/salihuahmad105-creator/Vulnerability-scanner

    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