Rule Document 1:301195

Rule Category

BROWSER-IE -- Snort has detected traffic known to exploit vulnerabilities present in the Internet Explorer browser, or products that have the Trident or Tasman engines.

Alert Message

BROWSER-IE Microsoft Edge scripting engine memory corruption attempt

Rule Explanation

This rule looks for bytes known to be specific to files intended to exploit a memory corruption vulnerability vulnerability in the Microsoft Windows Edge browser.

What To Look For

This rule fires on attempts to exploit a memory corruption vulnerability in the Microsoft Windows Edge browser.

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

Rule Groups

MITRE::ATT&CK Framework::Enterprise::Execution::User Execution::Malicious File

An adversary may rely upon a user opening a malicious file in order to gain execution. Users may be subjected to social engineering to get them to open a file that will lead to code execution. This user action will typically be observed as follow-on behavior from Spearphishing Attachment. Adversaries may use several types of files that require a user to execute them, including .doc, .pdf, .xls, .rtf, .scr, .exe, .lnk, .pif, and .cpl.

MITRE::ATT&CK Framework::Enterprise::Initial Access::Drive-by Compromise

Rule Categories::Operating Systems::Windows

Rule Categories::Browser::Internet Explorer

CVE

CVE-2025-30397

Additional Links

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30397

Rule Vulnerability

Memory Corruption

Memory Corruption is any vulnerability that allows the modification of the content of memory locations in a way not intended by the developer. Memory corruption results are inconsistent; they could lead to fatal errors and system crashes or data leakage; some have no effect at all.

CVE Additional Information

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

CVE-2025-30397

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