The Secunia Online Software Inspector will inspect your operating system and software for insecure versions and missing security updates. They also offer a free Personal Software Inspector program for download, and a commercial network version.
They also tell you where to get current versions if you're out of date.
Here's sample output for one program:
CODE
This installation of Adobe Reader 7.x is insecure and potentially exposes your system to security threats!
The detected version installed on your system is 7.0.5.172, however, the latest secure version released by the vendor, fixing one or more vulnerabilities, is 7.1.0.
Update Instructions:
Update to 7.1.0.
http://www.adobe.com/products/acrobat/readstep2.html
Vulnerabilities Fixed:
Read about the vulnerabilities fixed with this update in Secunia advisory SA28851 (opens in a new window). The Secunia advisory describes the vulnerabilities fixed by the latest security update. If your installation is outdated with more than one version, then more vulnerabilities may be covered.
Installed on Your System in:
C:\Program Files\Adobe\Acrobat 7.0\Reader\AcroRd32.exe
The detected version installed on your system is 7.0.5.172, however, the latest secure version released by the vendor, fixing one or more vulnerabilities, is 7.1.0.
Update Instructions:
Update to 7.1.0.
http://www.adobe.com/products/acrobat/readstep2.html
Vulnerabilities Fixed:
Read about the vulnerabilities fixed with this update in Secunia advisory SA28851 (opens in a new window). The Secunia advisory describes the vulnerabilities fixed by the latest security update. If your installation is outdated with more than one version, then more vulnerabilities may be covered.
Installed on Your System in:
C:\Program Files\Adobe\Acrobat 7.0\Reader\AcroRd32.exe
Note that Secunia may only tell you of the latest version within your major release level (Adobe Reader 7), even though there's a later release level (Adobe Reader 8). I surmise this is because new releases may not be free upgrades (Office 2007 versus Office 97, say). With Flash, it will tell you of the latest release (I had Flash 4, 6, 7, 8, and 9 in various locations, and went to the latest version of 9.)