According to US CERT, the targeted attacks were spotted on May 2, 2008.
Vulnerable component: Windows
CVSSv3 score: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C
CWE-ID: CWE-190 - Integer Overflow or Wraparound
The vulnerability allows a remote authenticated attacker to execute arbitrary code on the target system.
The weakness exists due to integer overflow in Windows Internet Printing Protocol (IPP) implementation. By sending a specially crafted HTTP POST request, a remote authenticated attacker can cause memory corruption and execute arbitrary code.
Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.
Note: the vulnerability was being actively exploited.