Adobe has issued a security advisory announcing a new zero-day vulnerability (CVE-2010-1297) that is being exploited in the wild against Adobe Flash Player, Adobe Reader and Acrobat.

The vulnerability is present in the Adobe software for platforms including Windows, Macintosh, Solaris, Linux and Unix.
Symantec Security Response has confirmed that the attack involves Trojan.Pidief.J, which is a PDF file that drops a back door onto the compromised computer if an affected product is installed.
According to Symantec, it isalso observed that a malicious SWF file (detected as Trojan Horse) is used in conjunction with an HTML file (detected as Downloader) to download another malware (detected as Backdoor.Trojan) from the web.