High · published October 14, 2025
⚡ A crafty use-after-free vulnerability in Microsoft Office Excel lets unauthorized attackers execute code locally — like leaving a back door open in your office! 🔓 Think of this as a misplaced document that anyone can access long after you've closed the file cabinet. Just because you think it’s out of reach doesn’t mean someone can’t sneak in and grab it! An attacker could exploit this flaw to run malicious code on your system, potentially leading to data loss, unauthorized access, or complete takeover of your machine. It’s a high-stakes game where your security could be compromised without you even knowing it!
Think of this as a misplaced document that anyone can access long after you've closed the file cabinet. Just because you think it’s out of reach doesn’t mean someone can’t sneak in and grab it! This vulnerability arises when Excel fails to properly manage memory during object lifetime, leading to potential execution of arbitrary code when an attacker manipulates memory. It’s a classic case of uncontrolled access to sensitive functionality!
An attacker could exploit this flaw to run malicious code on your system, potentially leading to data loss, unauthorized access, or complete takeover of your machine. It’s a high-stakes game where your security could be compromised without you even knowing it! To mitigate this risk, ensure you update your Microsoft Office Excel to the latest version immediately. Regularly check for updates and consider implementing stricter access controls to prevent unauthorized users from exploiting this vulnerability. This is fixable! Stay proactive, follow these steps, and you’ll have your security back in tip-top shape in no time! 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| microsoft/365_apps | all versions | — |
| microsoft/365_apps | 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 | < 16.0.10417.20059 | 16.0.10417.20059 |