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Sid 1-47732


BROWSER-IE Microsoft Edge empty prototype use-after-free attempt


This event is generated when a crafted web page designed to exploit Microsoft Edge traverses the network.


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

A type confusion vulnerability is found in Edge. This vulnerability can be exploited to achieve remote code execution. CVE-2018-8459: A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8354, CVE-2018-8391, CVE-2018-8456, CVE-2018-8457.

Affected systems

  • microsoft chakracore 1.10.1
  • microsoft edge -

Ease of attack


Access Vector

Access Complexity


False positives

None known

False negatives

None known

Corrective action


  • Cisco's Talos Intelligence Group

Additional References