CVE-2026-45455 LOW

CVE-2026-45455: Microsoft Excel Information Disclosure Vulnerability

Vendor Microsoft
Product Microsoft 365 Apps for Enterprise
Weakness CWE-125
Published June 9, 2026
Last update June 15, 2026
View on NVD All CVEs

CVSS base score

3.3/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.

Key dates

02Disclosure timeline

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