CVE-2026-109494

HighCVSS 8.8/10Last modified Nov 10, 2026

Description

Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-122

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
MicrosoftMicrosoft 365 Apps for Enterprise>= 16.0.1, < https://aka.ms/OfficeSecurityReleases
MicrosoftMicrosoft Office LTSC 2021>= 16.0.1, < 16.0.14334.21048
MicrosoftMicrosoft Office LTSC 2024>= 16.0.0, < 16.0.17932.21140

References

Timeline

Published
Nov 10, 2026
Last modified
Nov 10, 2026
NVD status
Awaiting Analysis

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CVE-2026-109494: High severity, CVSS 8.8 | Vulnix