High · published November 11, 2025
⚡ An out-of-bounds read flaw in Microsoft Excel means unauthorized users could sneak a peek at your sensitive info! 📊 Think of this vulnerability like someone peeking over your shoulder while you're reviewing confidential documents—if they know where to look, they can see your private notes without you ever knowing! An attacker could exploit this vulnerability to access sensitive data stored in Excel files, leading to potential data leaks and unauthorized disclosure of information. This could be absolutely devastating for individuals and organizations relying on Excel for privacy and security!
Think of this vulnerability like someone peeking over your shoulder while you're reviewing confidential documents—if they know where to look, they can see your private notes without you ever knowing! The out-of-bounds read in Microsoft Excel allows attackers to bypass normal access controls, exposing information that should remain protected. This occurs because the software fails to properly validate the boundaries of data being accessed.
An attacker could exploit this vulnerability to access sensitive data stored in Excel files, leading to potential data leaks and unauthorized disclosure of information. This could be absolutely devastating for individuals and organizations relying on Excel for privacy and security! To remediate this issue, patch Microsoft Office Excel to the latest version as soon as possible. Additionally, review and restrict file access permissions to limit exposure to unauthorized users. Regularly audit your security settings to bolster privacy. You've got this! Just follow those steps, and you'll have your Excel files secured in no time! 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| microsoft/365_apps | all versions | — |
| microsoft/365_apps | all versions | — |
| microsoft/excel | all versions | — |
| microsoft/excel | all versions | — |
| microsoft/office | all versions | — |
| microsoft/office | all versions | — |
| microsoft/office_long_term_servicing_channel | all versions | — |
| microsoft/office_long_term_servicing_channel | all versions | — |
| microsoft/office_long_term_servicing_channel | all versions | — |
| microsoft/office_long_term_servicing_channel | all versions | — |
| microsoft/office_long_term_servicing_channel | all versions | — |
| microsoft/office_long_term_servicing_channel | all versions | — |
| microsoft/office_online_server | < 16.0.10417.20068 | 16.0.10417.20068 |