Use-after-free in Microsoft products - CVE-2026-45486

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Main Vulnerability Database Vulnerabilities #VU134214

Use-after-free in Microsoft products - CVE-2026-45486

Published: June 10, 2026


Vulnerability identifier: #VU134214
CSH Severity: High
CVSS v4.0: 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/E:U/U:Amber
CVE-ID: CVE-2026-45486
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Microsoft
Affected software:
Microsoft 365 Apps for Enterprise
Microsoft Office
Microsoft Office LTSC

Detailed vulnerability description

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.


How to mitigate CVE-2026-45486

Install updates from vendor's website.

Sources