Critical vulnerabilities have been identified in Adobe Photoshop CS4 versjon 11.0.0.
A specially formed TIFF file could allow an attacker to take control of an affected system.
Critical is Adobe's highest vulnerability rating and could when exploited allow malicious native-code to execute, potentially without a user being aware.
Updates that solves these vulnerabilities are available (version 11.0.1). More information is available in Adobe's security bulletin 10-10.
Note that Adobe Photoshop CS5 is not affected by these vulnerabilities.
Norman recommends that users update their Adobe Photoshop CS4 installations as soon as possible.