Rule Category

FILE-OFFICE -- Snort detected traffic targeting vulnerabilities in files belonging to the Microsoft Office suite of software (Excel, PowerPoint, Word, Visio, Access, Outlook, etc.).

Alert Message

FILE-OFFICE Microsoft Windows Outlook remote code execution attempt

Rule Explanation

This rule looks for bytes known to be specific to files that are intended to exploit a use after free in Microsoft Outlook.

What To Look For

This rule looks for attempts to exploit a use after free vulnerability in Microsoft Outlook.

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

Rule Groups

No rule groups

CVE

Additional Links

Rule Vulnerability

Use After Free

Use After Free (UAF) attacks target computer memory flaws to corrupt the memory execute code. The name refers to attempts to use memory after it has been freed, which can cause a program to crash under normal circumstances, or result in remote code execution in a successful attack.

CVE Additional Information

This product uses data from the NVD API but is not endorsed or certified by the NVD.
CVE-2026-40361
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