CVE-2015-7645

Adobe Flash Player had a serious weakness that can be triggered by opening a specially made Flash file (a “SWF”). If someone convinces a user to open it, the attacker may be able to take over the computer.

Think of it like a “door” that still exists in your building: even if it looks locked, the lock is known to be breakable, and attackers have used it before.

This matters if you run or support computers where Adobe Flash Player is still installed and can be used by users (for example, through a browser or another app that plays Flash). The impacted Flash versions are end-of-life, and CISA’s guidance treats the risk as real in campaigns.

This is only a risk when the affected Flash functionality is reachable from where users can be tricked into opening Flash content (i.e., when Flash is installed and can be used).

This is RED because CISA lists CVE-2015-7645 in its Known Exploited Vulnerabilities set and the required action explicitly says the affected product is end-of-life and should be disconnected if still in use. Public exploits exist and the vulnerability has been used in real-world campaigns.

Treat any system still running the affected Flash versions as actively at risk until Flash is removed or disabled.