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    CVE-2026-77903

    Authentication bypass by spoofing in Microsoft Dataverse allows an unauthorized attacker to elevate privileges over a network.

    Published:Sep 17, 2026
    Last Modified:Sep 25, 2026
    EPS:Sep 17, 2026
    EPSS Score:0.00668
    CVSS Score:9

    Affected Products

    Vendor
    Microsoft
    Product
    Dataverse

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-88131 (CVSS 9.8) — Deserialization of untrusted data in Microsoft Dataverse allows an unauthorized attacker to execute code over …
    CVE-2025-29826 (CVSS 7.3) — Improper handling of insufficient permissions or privileges in Microsoft Dataverse allows an authorized attack…
    CVE-2025-47732 (CVSS 8.7) — Deserialization of untrusted data in Microsoft Dataverse allows an authorized attacker to execute code over a …
    CVE-2025-29807 (CVSS 8.7) — Deserialization of untrusted data in Microsoft Dataverse allows an authorized attacker to execute code over a …
    CVE-2025-24053 (CVSS 7.2) — Improper authentication in Microsoft Dataverse allows an authorized attacker to elevate privileges over a netw…
    CVE-2024-38139 (CVSS 8.7) — Improper authentication in Microsoft Dataverse allows an authorized attacker to elevate privileges over a netw…

    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