CVE-2026-44817CWE-843

Microsoft Excel Remote Code Execution Vulnerability

High · published June 9, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
39.4
In the wild
Unconfirmed
What it is

Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.00466 · 39.4th percentile
Weakness
CWE-843 · Access of Resource Using Incompatible Type ('Type Confusion')
Published
2026-06-09T17:04Z
EPSS history
Timeline
  • 09 JUN 17:04Z
    Microsoft Excel Remote Code Execution Vulnerability
    cvelistv5