High · published December 9, 2025
⚡ A sneaky type confusion in Microsoft Office could let an unauthorized attacker execute code locally—like getting into a restricted party by wearing a costume that blends in! 🎭 Think of it as someone dressing up as staff to access a private event—they might not belong there, but their convincing disguise opens the door. This vulnerability allows attackers to leverage incompatible resource types to bypass security measures in Microsoft Office. If exploited, an attacker could run their own code on a victim's machine, potentially leading to data breaches, unauthorized access to sensitive files, or even full control over the affected system. This could be absolutely devastating for your personal and organizational security!
Think of it as someone dressing up as staff to access a private event—they might not belong there, but their convincing disguise opens the door. This vulnerability allows attackers to leverage incompatible resource types to bypass security measures in Microsoft Office. This type confusion vulnerability in Microsoft Office arises when the software mistakenly handles an incompatible resource type, allowing unauthorized code execution. This flaw can lead to significant security risks if injected code is executed.
If exploited, an attacker could run their own code on a victim's machine, potentially leading to data breaches, unauthorized access to sensitive files, or even full control over the affected system. This could be absolutely devastating for your personal and organizational security! To mitigate this vulnerability, ensure you are running the latest version of Microsoft Office with all security patches applied. Regularly check for updates and consider implementing application whitelisting to restrict unauthorized code execution. This is fixable! Stay updated and vigilant, and you'll keep your systems safe! 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| microsoft/365_apps | all versions | — |
| microsoft/365_apps | all versions | — |
| microsoft/365_copilot | all versions | — |
| microsoft/office | all versions | — |
| microsoft/office | 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 | — |