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Critical RCE Vulnerability Found in Cisco WebEx Extensions, Again — Patch Now!
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[Image: Cisco-WebEx-Remote-Command-Execution.png]

A highly critical vulnerability has been discovered in the Cisco Systems’ WebEx browser extension for Chrome and Firefox, for the second time in this year, which could allow attackers to remotely execute malicious code on a victim's computer.

Cisco WebEx is a popular communication tool for online events, including meetings, webinars and video conferences that help users connect and collaborate with colleagues around the world. The extension has roughly 20 million active users.

Discovered by Tavis Ormandy of Google Project Zero and Cris Neckar of Divergent Security, the remote code execution flaw (CVE-2017-6753) is due to a designing defect in the WebEx browser extension.

To exploit the vulnerability, all an attacker need to do is trick victims into visiting a web page containing specially crafted malicious code through the browser with affected extension installed.

Successful exploitation of this vulnerability could result in the attacker executing arbitrary code with the privileges of the affected browser and gaining control of the affected system.

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