CVE-2026-109494

Microsoft Office Visio Remote Code Execution Vulnerability

Published Nov 10, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Microsoft microsoft Office Ltsc 2021
Microsoft microsoft Office Ltsc 2024
Vendors & Products Microsoft microsoft Office Ltsc 2021
Microsoft microsoft Office Ltsc 2024
Type Values Removed Values Added
Description Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network.
Title Microsoft Office Visio Remote Code Execution Vulnerability
First Time appeared Microsoft
Microsoft 365 Apps
Microsoft office 2021
Microsoft office 2024
Weaknesses CWE-122
CPEs cpe:2.3:a:microsoft:365_apps:*:*:*:*:enterprise:*:*:*
cpe:2.3:a:microsoft:office_2021:*:*:*:*:long_term_servicing_channel:*:*:*
cpe:2.3:a:microsoft:office_2024:*:*:*:*:long_term_servicing_channel:*:*:*
Vendors & Products Microsoft
Microsoft 365 Apps
Microsoft office 2021
Microsoft office 2024
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
microsoft
Published
Updated
Nov 13, 2026, 6:09 PM
Reserved
Oct 12, 2026, 5:12 PM
Status
Awaiting Analysis
Published
Nov 10, 2026, 7:18 PM
Modified
Nov 10, 2026, 9:18 PM