Use-after-free in Microsoft products - CVE-2026-45486
Published: June 10, 2026
Vulnerability identifier: #VU134214
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-45486
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in Microsoft Word. A remote attacker can trick a victim to open a specially crafted Office file and execute arbitrary code on the target system.
Affected software
Microsoft 365 Apps for Enterprise
Microsoft Office
Microsoft Office LTSC
Microsoft Office
Microsoft Office LTSC
How to mitigate CVE-2026-45486
Install updates from vendor's website.