Another week, another security update from Adobe Systems.

This time around, Adobe (NASDAQ: ADBE) is promising customers a fix next week for a zero-day vulnerability in its popular Reader and Acrobat applications that it first acknowledged on Sept. 8.

Just last week, Adobe raced out a patch for what it called a "critical" hole in its Flash Player software.

In both cases, Adobe's security researchers said hackers could exploit the security holes to take control of users PCs and mobile devices, allowing them to distribute more malware and spam from the infected machines.

An indication that Adobe officials are particularly concerned about this latest hole is the fact that the company is pushing out this fix on Oct. 5, just one week before it originally planned to release its regularly scheduled quarterly security updates.

According to the company's oft-used security updating service, the patch will shore up versions of Adobe Reader 9.3.4 for Windows, Mac and UNIX, Adobe Acrobat 9.3.4 for Windows and Mac, as well as Reader 8.2.4 and Acrobat 8.2.4 for Windows and Mac.

Larry Barrett is a senior editor at, the news service of, the network for technology professionals. Follow eSecurityPlanet on Twitter @eSecurityP.