Input validation error in Microsoft Office for macOS - CVE-2026-70323
Published: August 12, 2026
Vulnerability identifier: #VU141853
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-70323
CWE-ID: CWE-20
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 improper input validation in Microsoft Office when parsing a specially crafted file. A remote attacker can trick the victim into opening a crafted file to disclose sensitive information.
The disclosed data is limited to small portions of heap memory. The Preview Pane is not an attack vector for this vulnerability.
Affected software
Microsoft Office for macOS
How to mitigate CVE-2026-70323
Install security update from vendor's website.
Microsoft Office for macOS - update to 16.112.26081010