Out-of-bounds read in Microsoft Office for macOS and Microsoft Excel - CVE-2026-68802
Published: August 12, 2026
Vulnerability identifier: #VU141824
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-68802
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to out-of-bounds read in Microsoft Office Excel when parsing a specially crafted file. A remote attacker can trick the victim into opening a crafted file to disclose sensitive information.
The Preview Pane is not an attack vector. User interaction is required to open a crafted file. Successful exploitation could allow reading portions of process memory.
Affected software
Microsoft Office for macOS
Microsoft Excel
Microsoft Excel
How to mitigate CVE-2026-68802
Install security update from vendor's website.
Microsoft Office for macOS - update to 16.112.26081010
Microsoft Excel - update to 16.0.5565.1001
Microsoft Excel - update to 16.0.5565.1001