CVE-2026-65656CWE-77command-injection

CVE-2026-65656

High · published August 11, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
39.0
In the wild
Unconfirmed
What it is

Improper neutralization of special elements used in a command ('command injection') in Microsoft Office 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
CVSS v4.0
Not supplied
EPSS
0.00462 · 39.0th percentile
Weakness
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
Published
2026-08-11T21:18Z
Affected products (8)
ProductVersionsFixed in
microsoft/365_appsall versions—
microsoft/365_appsall versions—
microsoft/office_2019all versions—
microsoft/office_2019all versions—
microsoft/office_2021all versions—
microsoft/office_2021all versions—
microsoft/office_2024all versions—
microsoft/office_2024all versions—
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65656 · [email protected]
EPSS history
Timeline
  • 11 AUG 17:04Z
    Microsoft Office Remote Code Execution Vulnerability
    cvelistv5