CVE-2026-40364

HIGH EPSS 90.1%
Published May 12, 20261mo ago · Modified Jun 17, 20262w ago
8.4 CVSS 3.1
High
Find Similar
Published May 12, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

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

CVSS Details

Base Score
8.4
Exploitability
2.5
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
90.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 3

CWE-122
CWE-843
CWE-908

Affected Products 12

VendorProductVersionRange
microsoft365_apps*any
microsoft365_apps*any
microsoftoffice2019any
microsoftoffice2019any
microsoftoffice_long_term_servicing_channel2021any
microsoftoffice_long_term_servicing_channel2021any
microsoftoffice_long_term_servicing_channel2021any
microsoftoffice_long_term_servicing_channel2024any
microsoftoffice_long_term_servicing_channel2024any
microsoftoffice_long_term_servicing_channel2024any
microsoftword2016any
microsoftword2016any

References 1

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.