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Sid 1-46246


BROWSER-IE Microsoft Internet Explorer embedSWF use after free exploit attempt


This event is generated when an attacker attempts to exploit a use-after-free vulnerability present in 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

Rule checks for an attempt to exploit a use-after-free vulnerability in Internet Explorer. CVE-2018-0870: A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory, aka "Internet Explorer Memory Corruption Vulnerability." This affects Internet Explorer 11. This CVE ID is unique from CVE-2018-0991, CVE-2018-0997, CVE-2018-1018, CVE-2018-1020.

Affected systems

  • microsoft internet_explorer 11

Ease of attack


False positives

Not known

False negatives

Not known

Corrective action


  • Cisco's Talos Intelligence Group

Additional References