CVE-2026-108438

Microsoft Office Word Information Disclosure Vulnerability

State: Published
Severity: 6.5 Medium
Published: Oct 15, 2026
Updated: Oct 31, 2026
Reserved: Oct 9, 2026

Description

Use after free in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
Microsoft 365 Apps for EnterpriseMicrosoft	16.0.1 to before https://aka.ms/OfficeSecurityReleasesAffected
Microsoft Office 365 for MacMicrosoft	1.0.0 to before 16.114.26101123Affected
Microsoft Office LTSC for Mac 2021Microsoft	16.0.1 to before 16.114.26101123Affected
Microsoft Office LTSC for Mac 2024Microsoft	16.0.0 to before 16.114.26101123Affected

References

Microsoft Office Word Information Disclosure Vulnerabilityvendor-advisorypatch

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