CVE-2026-21514
Analyzed
Analyzed - Analysis Complete
Security Bypass via Untrusted Input in Microsoft Word
Publication date: 2026-02-10
Last updated on: 2026-02-11
Assigner: Microsoft Corporation
Description
Description
Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | 365_apps | * |
| microsoft | 365_apps | * |
| microsoft | office_long_term_servicing_channel | 2021 |
| microsoft | office_long_term_servicing_channel | 2024 |
| 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 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-807 | The product uses a protection mechanism that relies on the existence or values of an input, but the input can be modified by an untrusted actor in a way that bypasses the protection mechanism. |
Attack-Flow Graph
AI Powered Q&A
How can this vulnerability be detected on my network or system? Can you suggest some commands?
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What immediate steps should I take to mitigate this vulnerability?
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Can you explain this vulnerability to me?
This vulnerability involves Microsoft Office Word relying on untrusted inputs when making a security decision. Because of this, an unauthorized attacker can locally bypass a security feature in the application.
How can this vulnerability impact me? :
The impact of this vulnerability is that an attacker can bypass security features in Microsoft Office Word without proper authorization. This can lead to a compromise of confidentiality, integrity, and availability of data handled by the application.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
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