CVE-2026-26134
Received
Received - Intake
Integer Overflow in Microsoft Office Enables Local Privilege Escalation
Publication date: 2026-03-10
Last updated on: 2026-03-13
Assigner: Microsoft Corporation
Description
Description
Integer overflow or wraparound in Microsoft Office allows an authorized attacker to elevate privileges locally.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | office | to 16.0.19822.20000 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-416 | The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. |
| CWE-190 | The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is an integer overflow or wraparound issue in Microsoft Office.
It allows an authorized attacker to elevate their privileges locally on the affected system.
How can this vulnerability impact me? :
The vulnerability can lead to an elevation of privilege, meaning an attacker with some level of access could gain higher privileges than intended.
This could allow the attacker to perform actions that are normally restricted, potentially compromising the confidentiality, integrity, and availability of the system.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know
Ask Our AI Assistant
Need more information? Ask your question to get an AI reply (Powered by our expertise)
0/70