Adobe has issued three critical security updates, one of which is designed to stop a problem in the way the Flash player interacts with browsers, which could result in users' keystrokes being transmitted to attackers.

Adobe Flash Player 9.0.45.0, 8.0.34.0 and 7.0.69.0, as well as their earlier versions running on all platforms, are affected.

Users loading a malicious vector graphics file format (SWF) in their Flash Player may find attackers exploiting security flaws due to an input validation error in 9.0.45.0 and earlier versions, according to a security advisory from Secunia. Attackers, as a result, can gain remote access to a user's system.

In versions 7.0.69.0 and earlier running on Linux and Solaris, malicious attackers could exploit an error in the interaction between the Flash Player and certain browsers. That could potentially lead to a leaking of keystrokes to a Flash Player applet, Secunia noted. Flash Player 9 is not affected.