Think you have a false positive on this rule?

Sid 1-45122


BROWSER-IE Microsoft Internet Explorer use after free attempt


This event is generated when an attempt is made to exploit a use after free condition in Microsoft Internet explorer.


Attempted User Privilege Gain


CVSS base score 7.5

CVSS impact score 5.9

CVSS exploitability score 1.6

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Detailed information

CVE-2017-11888: Microsoft Edge in Microsoft Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user, due to how Microsoft Edge handles objects in memory, aka "Microsoft Edge Memory Corruption Vulnerability".

Affected systems

  • microsoft edge -

Ease of attack


Access Vector

Access Complexity


False positives

False negatives

Corrective action


  • Cisco's Talos Intelligence Group

Additional References