CVE-2026-45458CWE-416

Microsoft Outlook and Word Remote Code Execution Vulnerability

High · published June 9, 2026

CVSS v3.1
8.4
EPSS
0%
Percentile
37.7
In the wild
Unconfirmed
What it is

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

The record
Technical detail
CVSS v3.1
8.4 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.00446 · 37.7th percentile
Weakness
CWE-416 · Use After Free
Published
2026-06-09T17:04Z
EPSS history
Timeline
  • 09 JUN 17:04Z
    Microsoft Outlook and Word Remote Code Execution Vulnerability
    cvelistv5