CVE-2026-40421

medium Microsoft
CVSS v3 Base Score
4.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
EPSS Score
0.1%
Exploitation probability in 30 days
Top 83% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Confidentiality
Low
Integrity
None
Availability
None
Published: May 12, 2026 (58 days ago)
Last Modified: June 1, 2026
Vendor: Microsoft
Source: NVD

Description

Files or directories accessible to external parties in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

CWE

CWE-73

Affected Products

microsoft 365 appsmicrosoft officemicrosoft office long term servicing channelmicrosoft word

References

🔗 msrc.microsoft.com