Out-of-bounds read in Microsoft Office - CVE-2026-70281
Published: October 14, 2026
Vulnerability identifier: #VU154705
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-70281
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose information.
The vulnerability exists due to an out-of-bounds read in Microsoft Office Outlook when rendering content. A remote attacker can read small portions of heap memory to disclose information.
The Preview Pane is an attack vector.
Affected software
Microsoft Office
How to mitigate CVE-2026-70281
Install security update from vendor's website.
Microsoft Office - addressed in versions 16.0.14334.20974, 16.0.17932.21056