Vulnerability Intelligence

CVE-2015-5123

Critical 9.8 Exploited in the wild (KEV)

Published
Last modified
NVD status
Analyzed

CISA KEV catalog

Confirmed active exploitation.

Listed in CISA's catalog of Known Exploited Vulnerabilities: attackers are using it in real attacks. Patch it with priority.

CISA KEV
Name
Adobe Flash Player Use-After-Free Vulnerability
Added to catalog
Remediation due date (US federal)
Required action
The impacted product is end-of-life and should be disconnected if still in use.

Description

Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13.x through 13.0.0.302 on Windows and OS X, 14.x through 18.0.0.203 on Windows and OS X, 11.x through 11.2.202.481 on Linux, and 12.x through 18.0.0.204 on Linux Chrome installations 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

redhat: enterprise linux desktop; redhat: enterprise linux server; redhat: enterprise linux server eus; redhat: enterprise linux workstation; opensuse: evergreen; suse: linux enterprise desktop; suse: linux enterprise workstation extension; adobe: flash player; linux: linux kernel; adobe: flash player desktop runtime; apple: macos; microsoft: windows

References10

Metrics

CVSS 3.1
9.8 CRITICAL Score source: NVD CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS — exploit probability
19% percentile: 97 · as of 2 November 2026
CWE
CWE-416