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High severity8.4NVD Advisory· Published May 12, 2026· Updated Jun 1, 2026

CVE-2026-40367

CVE-2026-40367

Description

Access of resource using incompatible type ('type confusion') in Microsoft Office Word allows an unauthorized attacker to execute code locally.

Affected products

16
  • Microsoft/365 Apps2 versions
    cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*+ 1 more
    • cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*
    • cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:*
  • Microsoft/Office2 versions
    cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x64:*+ 1 more
    • cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x64:*
    • cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x86:*
  • Microsoft/Office Long Term Servicing Channel6 versions
    cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:macos:*:*+ 5 more
    • cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:macos:*:*
    • cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x64:*
    • cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x86:*
    • cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:macos:*:*
    • cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x64:*
    • cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x86:*
  • Microsoft/Sharepoint Server3 versions
    cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*+ 2 more
    • cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*
    • cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*
    • cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*range: <16.0.19725.20280
  • Microsoft/Word2 versions
    cpe:2.3:a:microsoft:word:2016:*:*:*:*:*:x64:*+ 1 more
    • cpe:2.3:a:microsoft:word:2016:*:*:*:*:*:x64:*
    • cpe:2.3:a:microsoft:word:2016:*:*:*:*:*:x86:*
  • Microsoft/Office Wordllm-fuzzy

Patches

Vulnerability mechanics

References

1

News mentions

4