Adobe today released a critical update for Flash Player. The update was released outside of Adobe's regular patch cycle. [1]

The singled vulnerability fixed by this update, CVE-2016-7855, has already been exploited in targeted attacks against Windows.

Windows, Linux and Mac versions are affected, including versions embedded in Chrome and Edge/Internet Explorer 11. 

Please expedite this update, and review that Flash does not start automatically in your browser but only if enabled by the user for a specific site. Consider removing Flash whenever possible.

[1] https://helpx.adobe.com/security/products/flash-player/apsb16-36.html

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Johannes B. Ullrich, Ph.D.
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