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    CVE-2020-0647

    A spoofing vulnerability exists when Office Online does not validate origin in cross-origin communications correctly, aka 'Microsoft Office Online Spoofing Vulnerability'.

    Published:Jan 14, 2020
    Last Modified:Nov 21, 2024
    EPS:Jan 14, 2020
    EPSS Score:0.00578
    CVSS Score:5.4

    Affected Products

    Vendor
    Microsoft
    Product
    Office Online Server

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-346 Origin Validation Error

    Related CVEs

    CVE-2026-81956 (CVSS 7.8) — Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.…
    CVE-2026-81401 (CVSS 5.5) — Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized…
    CVE-2026-81390 (CVSS 5.5) — Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.…
    CVE-2026-81947 (CVSS 7.8) — Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.…
    CVE-2026-68793 (CVSS 7.8) — Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.…
    CVE-2026-55949 (CVSS 7.8) — Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code locall…
    CVE-2026-55947 (CVSS 7.8) — Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.…
    CVE-2026-55898 (CVSS 6.1) — Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.…
    CVE-2026-54131 (CVSS 7.8) — Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.…
    CVE-2026-55131 (CVSS 7.8) — Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.…

    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