Microsoft has issued one critical patch as part of its monthly "Patch Tuesday" update, which could affect hundreds of applications.
The company said that Java applications running using Microsoft's IE7 internet control, would need testing after the patch is applied. "If you have a Java application that uses the IE7 internet control, you will need to thoroughly test this application," said Grant Ford, chief operating officer at ChangeBase.
A report produced by the company's Aok automated software installation testing tool found that other applications affected include Oracle 9, several HP printer drivers and some IBM AS/400 client access tools.
Ford said, "We recommend organisations test their key applications affected by this patch before deploying the update and look carefully at the small number of applications affected more widely by these updates."
He estimated that many corporates have between 10% to 30% of their applications developed in house. "Hundreds or even thousands of individual packages will need testing," Ford warned.
"Corporates will be under extreme pressure to release this these new patches to the live environment but proper testing can takes months."