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    CVE-2020-1044

    <p>A security feature bypass vulnerability exists in SQL Server Reporting Services (SSRS) when the server improperly validates attachments uploaded to reports. An attacker who successfully exploited this vulnerability could upload file types that were disallowed by an administrator.</p> <p>To exploit the vulnerability, an authenticated attacker would need to send a specially crafted request to an affected SSRS server.</p> <p>The update addresses the vulnerability by modifying how SSRS validates attachment uploads.</p>

    Published:Sep 11, 2020
    Last Modified:Feb 23, 2026
    EPS:Sep 11, 2020
    EPSS Score:0.04445
    CVSS Score:4.3

    Affected Products

    Vendor
    Microsoft
    Product
    Sql Server 2017 Reporting Services
    Vendor
    Microsoft
    Product
    Sql Server 2019 Reporting Services
    Vendor
    Microsoft
    Product
    Sql Server Reporting Services

    Exploits

    No exploit reference

    Common Weakness Enumeration

    Common Attack Pattern Enumeration and Classification (CAPEC)

    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