CVE-2026-66806 MEDIUM

CVE-2026-66806: Microsoft Office Word Information Disclosure Vulnerability

Vendor Microsoft
Product Microsoft 365 Apps for Enterprise
Weakness CWE-193
Published August 11, 2026
Last update August 21, 2026
View on NVD All CVEs

CVSS base score

5.5/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Off-by-one error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

Key dates

02Disclosure timeline

August 11, 2026 CVE published
August 21, 2026 Record updated