CVE-2026-40363
HIGH
MEDIUM
Priority: 0.03
BB Relevance:
52/100
Published: 2026-05-12
Modified: 2026-10-26
First seen: 2026-10-29
Status: active
Attack Surface
Low Complexity
No Auth
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
High
I:
High
A:
High
Description
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
Weakness Classification (1)
Affected Software (13)
| Vendor | Product | Version |
|---|---|---|
| microsoft | 365_apps | - |
| microsoft | 365_apps | - |
| microsoft | 365_copilot | < 16.0.19822.20190 |
| microsoft | office | 2016 |
| microsoft | office | 2016 |
| microsoft | office | 2019 |
| microsoft | office | 2019 |
| microsoft | office_long_term_servicing_channel | 2021 |
| microsoft | office_long_term_servicing_channel | 2021 |
| microsoft | office_long_term_servicing_channel | 2021 |
| microsoft | office_long_term_servicing_channel | 2024 |
| microsoft | office_long_term_servicing_channel | 2024 |
| microsoft | office_long_term_servicing_channel | 2024 |
References & Advisories (1)
Vendor Advisory