CVE-2026-40364

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

CVSS 3.1

8.4CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

4.4% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-26)

CWEs

CWE-122, CWE-843, CWE-908

Published

2026-05-12

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

Affected

• microsoft:365_apps
• microsoft:office
• microsoft:office_long_term_servicing_channel
• microsoft:word

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40364

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