CVE-2026-55133
HIGH
MEDIUM
Priority: 0.04
BB Relevance:
41/100
Published: 2026-07-14
Modified: 2026-10-28
First seen: 2026-10-29
Status: active
Attack Surface
Low Complexity
No Auth
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
None
UI:
Required
S:
Unchanged
C:
High
I:
High
A:
High
Description
Heap-based buffer overflow in Microsoft Office OneNote allows an unauthorized attacker to execute code locally.
Weakness Classification (1)
Affected Software (13)
| Vendor | Product | Version |
|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise | 16.0.1 < https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft 365 Apps for Enterprise | 16.0.1 < https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Office 365 for Mac | 1.0.0 < 16.111.26071215 |
| Microsoft | Microsoft Office 365 for Mac | 1.0.0 < 16.111.26071215 |
| Microsoft | Microsoft Office LTSC for Mac 2021 | 16.0.1 < 16.111.26071215 |
| Microsoft | Microsoft Office LTSC for Mac 2021 | 16.0.1 < 16.111.26071215 |
| Microsoft | Microsoft Office LTSC for Mac 2024 | 16.0.0 < 16.111.26071215 |
| Microsoft | Microsoft Office LTSC for Mac 2024 | 16.0.0 < 16.111.26071215 |
| microsoft | 365_apps | - |
| microsoft | 365_apps | - |
| microsoft | microsoft_365 | - |
| microsoft | office_2021 | - |
| microsoft | office_2024 | - |
References & Advisories (1)
vendor-advisory
patch