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    CVE-2026-119997

    Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code locally.

    Published:Nov 10, 2026
    Last Modified:Nov 10, 2026
    EPS:Nov 10, 2026
    EPSS Score:
    CVSS Score:7.8

    Affected Products

    Vendor
    Microsoft
    Product
    365 Apps
    Vendor
    Microsoft
    Product
    Office 2021
    Vendor
    Microsoft
    Product
    Office 2024

    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-2026-120003 (CVSS 8.8) — Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code over a network.…
    CVE-2026-120001 (CVSS 8.8) — Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over…
    CVE-2026-119999 (CVSS 6.5) — Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a ne…
    CVE-2026-119998 (CVSS 6.5) — Product ui does not warn user of unsafe actions in Microsoft Office allows an unauthorized attacker to bypass …
    CVE-2026-119996 (CVSS 7.5) — Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a …
    CVE-2026-119995 (CVSS 7.5) — Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a …
    CVE-2026-119993 (CVSS 6.5) — Access of resource using incompatible type ('type confusion') in Microsoft Office Outlook allows an unauthoriz…
    CVE-2026-118732 (CVSS 8.8) — Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.…
    CVE-2026-118731 (CVSS 8.8) — Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a n…
    CVE-2026-118730 (CVSS 8.8) — Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.…

    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