Adobe is to release its next security update next Tuesday with critical security issues patched in Adobe Reader and Acrobat.

Updates will be released for Adobe Reader 9.3.1 for Windows, Macintosh and UNIX, Adobe Acrobat 9.3.1 for Windows and Macintosh and Adobe Reader 8.2.1 and Acrobat 8.2.1 for Windows and Macintosh.

Wendy Poland, security response program manager at Adobe Systems, said: “With this quarterly update, we are enabling the new updater first shipped in a passive state with the October quarterly security update.”

The move marks Adobe's fourth security update for 2010, and it coincides with the next Microsoft Patch Tuesday update.

Wolfgang Kandek, CTO at Qualys, said: “In addition to the Microsoft patches, administrators will also have to pay attention to the security fixes coming out from Adobe for the Reader and Acrobat products. The Adobe update is rated as critical and a successful exploit will allow the attacker to take control of the target machine.