Mammoth security patch rushed out for Adobe Acrobat and Reader

Adobe has issued a security bulletin urging users of its Adobe PDF Reader and Acrobat products to update their software before hackers take advantage of at least 23 vulnerabilities in the software.

In a clear sign of the seriousness posed by the security holes (at least one of which is being actively exploited by cybercriminals), the updates were issued ahead of Adobe’s regular quarterly schedule.

Adobe Reader 9.3.4 (and earlier versions) for Windows, Mac OS X and UNIX, Adobe Acrobat 9.3.4 (and earlier versions) for Windows and Mac OS X, and Adobe Reader 8.2.4 (and earlier versions) and Adobe Acrobat 8.2.4 (and earlier versions) for Windows and Mac OS X are all vulnerable to the security flaws, which could potentially allow a hacker to take control of users’ computers.

More information has been published by Adobe in their security advisory APSB10-21…

Read more in my article on the Naked Security website.

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Graham Cluley •   @gcluley

Graham Cluley is a veteran of the cybersecurity industry, having worked for a number of security companies since the early 1990s when he wrote the first ever version of Dr Solomon's Anti-Virus Toolkit for Windows. Now an independent analyst, he regularly makes media appearances and is an international public speaker on the topic of cybersecurity, hackers, and online privacy. Follow him on Twitter, Mastodon, Bluesky, or drop him an email.