Neither of the bugs exists within the newest versions, Office 2010 on Windows or Office for Mac 2011.

"This one is in line with the general file format vulnerabilities we see almost every month," said Storms.

Storms' comment was on the mark: in April, and .

Tuesday's patch for PowerPoint 2002 -- the version bundled with Office XP -- may be one of the last for that program: The 10-year-old suite will not receive security updates after July 12.

Microsoft also made good on a promise last week when it said it would tweak its Exploitability Index, the rating system that forecasts the likelihood a vulnerability will be exploited in the coming month.