Adobe will issue patches next week for older versions of its Reader and Acrobat Reader software, which contain a dangerous vulnerability that could be used for phishing attacks or to remotely access files on a computer.
The problem affects versions 7.0.8 and earlier of the Acrobat and Reader programs. Adobe is telling users of those versions to disable the Acrobat and Reader plug-in in their web browser until the patches are issued.
Since the problem became public, Adobe has also been encouraging customers to upgrade to Reader 8, the latest version of its program, which is not affected by the vulnerability.
Some users can't upgrade to the new version, however, so Adobe will issue the patches for those users next week, said Adobe spokeswoman Meredith Mills.
Adobe is also warning users to exercise caution when clicking on untrusted links, since those links could be manipulated to run an exploit.
Security vendor Websense wrote on Thursday that an attacker could also gain access to files on a machine.
Exploits will apparently only work with certain combinations of web browsers and Adobe software, but Adobe did not specify which combinations.
Symantec wrote in its blog that the vulnerability affects the Firefox web browser. Further tests showed that users running a combination of Internet Explorer (IE) 6 and Adobe Reader 7 on Windows XP Service Pack 1, and Internet Explorer 6 and Adobe Reader 4 on Windows XP Service Pack 2, are also vulnerable, Symantec wrote.