OpenOffice.org has patched a critical vulnerability in the open-source application suite.
The vulnerability concerns the way OpenOffice handles .wmf images. Exploitation of the vulnerability, which affects all but the newest version of OpenOffice, can enable a hacker to perform a buffer overflow and then introduce malicious code to the victim's PC.
Security advisor Secunia rates the vulnerability as "highly critical", and it has urged users to patch their systems.