CVE-2026-40421CWE-73

Microsoft Word Information Disclosure Vulnerability

Medium · published May 12, 2026

CVSS v3.1
4.3
EPSS
1%
Percentile
52.8
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.00704 · 52.8th percentile
Weakness
CWE-73 · External Control of File Name or Path
Published
2026-05-12T16:58Z
EPSS history
Timeline
  • 12 MAY 16:58Z
    Microsoft Word Information Disclosure Vulnerability
    cvelistv5