CVE-2026-108438CWE-416

CVE-2026-108438

Medium · published October 16, 2026

CVSS v3.1
6.5
EPSS
1%
Percentile
42.1
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00503 · 42.1th percentile
Weakness
CWE-416 · Use After Free
Published
2026-10-16T01:17Z
Affected products (5)
ProductVersionsFixed in
microsoft/365_appsall versions—
microsoft/365_appsall versions—
microsoft/microsoft_365all versions—
microsoft/office_2021all versions—
microsoft/office_2024all versions—
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-108438 · [email protected]
EPSS history
Timeline
  • 17 OCT 03:28Z
    EPSS moved — → 1%
    epss
  • 15 OCT 20:57Z
    Microsoft Office Word Information Disclosure Vulnerability
    cvelistv5
  • 15 OCT 20:57Z
    Microsoft Office Word Information Disclosure Vulnerability
    cvelistv5