CVE-2026-97755

Published: Oct 13, 2026Modified: Oct 14, 2026

8.8

Vector

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

Exploitability: 2.8 / Impact: 5.9

Source: secure@microsoft.com (Secondary)

Description

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

Affected (11)

Products: Microsoft: 365 Apps, Microsoft 365, Office 2021, Office 2024, Office Online Server, Sharepoint Server

6 products

Office Online Server

Sharepoint Server

Configuration A

11 vulnerable

Vulnerable Software	Affected Versions
Microsoft 365 Apps	All versions
Microsoft 365 Apps	All versions
Microsoft Microsoft 365	All versions
Microsoft Office 2021	All versions
Microsoft Office 2021	All versions
Microsoft Office 2021	All versions
Microsoft Office 2024	All versions
Microsoft Office 2024	All versions
Microsoft Office 2024	All versions
Microsoft Office Online Server	Before 16.0.10417.20228
Microsoft Sharepoint Server	Before 16.0.20326.20190

Related CWEs

Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97755

Source: secure@microsoft.com

PatchVendor Advisory

Timeline

No history available yet.