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    CVE-2026-80085

    Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.

    Published:Sep 8, 2026
    Last Modified:Sep 10, 2026
    EPS:Sep 8, 2026
    EPSS Score:0.00472
    CVSS Score:8.8

    Affected Products

    Vendor
    Microsoft
    Product
    365
    Vendor
    Microsoft
    Product
    365 Apps
    Vendor
    Microsoft
    Product
    Microsoft 365
    Vendor
    Microsoft
    Product
    Microsoft Office 365 For Mac
    Vendor
    Microsoft
    Product
    Office 2019
    Vendor
    Microsoft
    Product
    Office 2021
    Vendor
    Microsoft
    Product
    Office 2024
    Vendor
    Microsoft
    Product
    Office 365
    Vendor
    Microsoft
    Product
    Office Macos 2021
    Vendor
    Microsoft
    Product
    Office Macos 2024
    Vendor
    Microsoft
    Product
    Word
    Vendor
    Microsoft
    Product
    Word 2016

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-122 Heap-based Buffer Overflow

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

    CVE-2026-81959 (CVSS 7.8) — Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.…
    CVE-2026-81388 (CVSS 7.8) — Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.…
    CVE-2026-81395 (CVSS 5.5) — Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.…
    CVE-2026-81401 (CVSS 5.5) — Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized…
    CVE-2026-78520 (CVSS 6.5) — Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.…
    CVE-2026-69734 (CVSS 6.5) — Integer overflow or wraparound in Microsoft Office Word allows an unauthorized attacker to disclose informatio…
    CVE-2026-68815 (CVSS 7.8) — Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.…
    CVE-2026-68810 (CVSS 7.8) — Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locall…
    CVE-2026-68796 (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.…

    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