CVE-2026-40361

high

Description

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

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40361

https://www.securityweek.com/microsoft-patches-critical-zero-click-outlook-vulnerability-threatening-enterprises/

https://thehackernews.com/2026/05/microsoft-patches-138-vulnerabilities.html

https://securityaffairs.com/192086/uncategorized/microsoft-patch-tuesday-for-may-2026-fix-138-bugs-some-of-them-are-alarming.html

https://www.securityweek.com/microsoft-patches-137-vulnerabilities/

https://www.tenable.com/blog/microsofts-may-2026-patch-tuesday-addresses-118-cves-cve-2026-41103

Details

Source: Mitre, NVD

Published: 2026-05-12

Updated: 2026-06-01

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.4

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

Severity: High

EPSS

EPSS: 0.00058