SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2026-40421

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

MEDIUM 4.3EPSS 0.62%

Does this matter?

Lower severity and a low EPSS score (0.62%). Track it; it rarely justifies an emergency change on its own.

Description

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

CVSS 3.1
4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
EPSS
0.62% probability · 48th percentile
CISA KEV
Not listed
Weakness
CWE-73
Affected
microsoft/365 apps · microsoft/office · microsoft/office long term servicing channel · microsoft/word
Source
secure@microsoft.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.