CVE-2026-26144

Microsoft · Published March 10, 2026

7.5

CVSS v3.1

HIGH

Patch availableGet patch

Description

Microsoft Excel Information Disclosure Vulnerability. Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.

Affected Products

Microsoft 365 Apps for Enterprise for 64-bit Systems
Microsoft 365 Apps for Enterprise for 32-bit Systems

CVSS Vector

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