Andrew Storms, director of security operations at nCircle Network Security, suspects that  Microsoft won’t issue a patch to protect Mac users of their PowerPoint software this month on Patch Tuesday: -

Despite the fact that a bumper crop of patches is expected, it appears that users of PowerPoint for the Mac may be left out in the cold.

"We don’t have the PowerPoint for the Mac patches," he said after reviewing the advance notice.

On last month’s Patch Tuesday, Microsoft patched the Windows versions of PowerPoint, but not the Mac editions, saying that it didn’t want to hang onto the update while waiting for Mac fixes.

The PowerPoint bug in Windows has been the subject of attacks by exploit code since April.

Jonathan Ness, an engineer at the Microsoft Security Response Center, said last month: –

"None of the exploit samples we have analyzed will reliably exploit the Mac version, so we didn’t want to hold the Windows security update while we wait for Mac packages,"

On June 4th 2009, Microsoft stated that it will deliver 10 security updates on its June 2009 Patch Tuesday, to patch serious bugs in Windows, Internet Explorer (IE), Word and Excel. According to sources it is apparent that 6 of the 10 patches are to be marked as "critical," while three will be rated as "moderate" and one as "important".