High · published December 9, 2025
⚡ An untrusted pointer dereference in Microsoft Office Excel could let an unauthorized attacker execute local code — talk about a surprise party no one wants! 🎉 Think of it like a waiter serving a dish without checking for dietary restrictions—if they don't verify what's on the plate, anyone can get served something harmful. In this case, Excel might run malicious code without realizing it! An attacker could potentially take over the system, executing any code they desire—everything from data theft to complete system compromise is on the table. That's a nightmare scenario for anyone relying on Excel for sensitive tasks!
Think of it like a waiter serving a dish without checking for dietary restrictions—if they don't verify what's on the plate, anyone can get served something harmful. In this case, Excel might run malicious code without realizing it! The vulnerability arises when Excel processes pointers that haven’t been properly validated, allowing attackers to manipulate program flow and execute arbitrary code on the user's machine.
An attacker could potentially take over the system, executing any code they desire—everything from data theft to complete system compromise is on the table. That's a nightmare scenario for anyone relying on Excel for sensitive tasks! Update Microsoft Excel to the latest version immediately to patch this vulnerability. Ensure that you enable security updates and review all user permissions to minimize exposure to unauthorized access. 🛡️ You've got this! By taking these steps, you can fortify your defenses and keep your data safe! 🔒
| 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 | < 16.0.10417.20075 | 16.0.10417.20075 |