CVE-2015-5119: Adobe Flash Player Use-After-Free Vulnerability

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2022-03-03. EPSS: 99.3% chance of exploitation in the next 30 days.

Use-after-free vulnerability in the ByteArray class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13.x through 13.0.0.296 and 14.x through 18.0.0.194 on Windows and OS X and 11.x through 11.2.202.468 on Linux allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted Flash content that overrides a valueOf function, as exploited in the wild in July 2015.

Affected products

• Adobe Flash Player: from 13.0.0.182, up to and including 13.0.0296; from 14.0.0.125, up to and including 18.0.0.194; up to and including 11.2.202.468
• Opensuse Evergreen: version 11.4 only
• Opensuse Opensuse: version 13.1 only; version 13.2 only
• Red Hat Enterprise Linux Desktop: version 5.0 only; version 6.0 only
• Red Hat Enterprise Linux Eus: version 6.6 only
• Red Hat Enterprise Linux Server: version 5.0 only; version 6.0 only
• Red Hat Enterprise Linux Server Aus: version 6.6 only
• Red Hat Enterprise Linux Server From Rhui: version 5.0 only; version 6.0 only
• Red Hat Enterprise Linux Workstation: version 5.0 only; version 6.0 only
• Suse Linux Enterprise Desktop: version 11 only; version 12 only
• Suse Linux Enterprise Workstation Extension: version 12 only

Published 2015-07-08. Last modified 2026-06-17.