CVE-2026-80091 MEDIUM

CVE-2026-80091: Microsoft Office Information Disclosure Vulnerability

Vendor Microsoft
Product Microsoft 365 Apps for Enterprise
Weakness CWE-908
Published September 8, 2026
Last update September 29, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/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

Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose information over a network.

Key dates

02Disclosure timeline

September 8, 2026 CVE published
September 29, 2026 Record updated