CVE-2026-40421

Published May 12, 2026

Last updated 2 months ago

Overview

Description
Files or directories accessible to external parties in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
Source
secure@microsoft.com
NVD status
Modified
Products
365_apps, office, office_long_term_servicing_channel, word

Risk scores

CVSS 3.1

Type
Secondary
Base score
4.3
Impact score
1.4
Exploitability score
2.8
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Severity
MEDIUM

Weaknesses

secure@microsoft.com
CWE-73

Social media

Hype score
Not currently trending

Configurations

References

Sources include official advisories and independent security research.