Exploited by DarkHotel APT.
The vulnerability survived for 84 days after update in November 2013.
Vulnerable component: Adobe Flash Player
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-191 - Integer Underflow (Wrap or Wraparound)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to integer underflow when processing .swf files. A remote attacker can create a specially crafted Web site, trick the victim into visiting it, trigger memory corruption and execute arbitrary code with privileges of the current user.
Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.
Note: the vulnerability was being actively exploited.