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    CVE-2025-53771

    Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

    Published:Jul 20, 2025
    Last Modified:Feb 13, 2026
    EPS:Jul 20, 2025
    EPSS Score:0.3649
    CVSS Score:6.5

    Affected Products

    Vendor
    Microsoft
    Product
    Sharepoint Enterprise Server
    Vendor
    Microsoft
    Product
    Sharepoint Enterprise Server 2016
    Vendor
    Microsoft
    Product
    Sharepoint Enterprise Server 2019
    Vendor
    Microsoft
    Product
    Sharepoint Server
    Vendor
    Microsoft
    Product
    Sharepoint Server 2016
    Vendor
    Microsoft
    Product
    Sharepoint Server 2019

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-287 Improper Authentication

    Related CVEs

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    CVE-2025-53736 (CVSS 6.8) — Buffer over-read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.…
    CVE-2025-53733 (CVSS 8.4) — Incorrect conversion between numeric types in Microsoft Office Word allows an unauthorized attacker to execute…
    CVE-2025-49706 (CVSS 6.5) — Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing ove…
    CVE-2025-47994 (CVSS 7.8) — Deserialization of untrusted data in Microsoft Office allows an unauthorized attacker to elevate privileges lo…
    CVE-2025-47172 (CVSS 8.8) — Improper neutralization of special elements used in an sql command ('sql injection') in Microsoft Office Share…
    CVE-2025-47169 (CVSS 7.8) — Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.…
    CVE-2025-47168 (CVSS 7.8) — Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.…
    CVE-2025-47166 (CVSS 8.8) — Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code…
    CVE-2025-47163 (CVSS 8.8) — Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code…

    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