CVE-2026-45458 HIGH

CVE-2026-45458: Microsoft Outlook and Word Remote Code Execution Vulnerability

Vendor Microsoft
Product Microsoft 365 Apps for Enterprise
Weakness CWE-416
Published June 9, 2026
Last update June 15, 2026
View on NVD All CVEs

CVSS base score

8.4/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

June 9, 2026 CVE published
June 15, 2026 Record updated

Related vulnerabilities

04Related CVE

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