Zero-day vulnerability in Adobe Flash Player

Use-after-free error

The vulnerability was disclosed by Neel Mehta and Billy Leonard of the Google Threat Analysis Group.

The vulnerability was exploited by Russian hacker group APT28.

Vulnerability details

Advisory: SB2016102602 - Remote code execution in Adobe Flash Player

Vulnerable component: Adobe Flash Player

CVE-ID: CVE-2016-7855

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-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to use-after-free error when handling .swf files. A remote attacker can trick the victim to visit a website or open a file with malicious Flash file and execute arbitrary code on the target system with privileges of the current user.

Note: this vulnerability was being actively exploited in the wild.