According to Symantec the first exploitation of the vulnerability was discovered on 2008-10-23.
Vulnerable component: Microsoft DirectX
CVSSv3 score: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C
CWE-ID: CWE-416 - Use After Free
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to use-after-free error when processing a malformed JPEG file. A remote attacker can create a specially crafted JPEG file, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system with privileges of the current user.
Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.
Note: this vulnerability is being actively exploited.