User-triggered code execution via FBX buffer overflow
Published Nov 9, 2022 · Updated Aug 10, 2026
Remote code execution in Microsoft Word allows attackers to run code as the current user after a crafted FBX file is opened. The FBX parser copies user-supplied data into a fixed-length heap buffer without first validating the data length. Exploitation requires user interaction, and successful code runs with the permissions of the Office process.
Summary
What happened
Remote code execution in Microsoft Word allows attackers to run code as the current user after a crafted FBX file is opened. The FBX parser copies user-supplied data into a fixed-length heap buffer without first validating the data length. Exploitation requires user interaction, and successful code runs with the permissions of the Office process.
The record
- CVE
- CVE-2022-41107
- Published
- Nov 9, 2022
- Updated
- Aug 10, 2026
- Vendor
- Microsoft
- Product
- Microsoft Office 2019
- Classifications
- T1204.002, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 9, 2022CVE publishedPublication date reported by the CVE source.
- Aug 10, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=19.0.0 <https://aka.ms/OfficeSecurityReleases
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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