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Vulnerability Intelligence

CVE-2015-5123

HighExploitedPublic exploit

flash-plugin: two code execution issues in APSA15-04 / APSB15-18

Published Jul 10, 2015 · Updated Feb 4, 2026 · Also known as UBUNTU-CVE-2015-5123

Key Facts

Patch immediately
  • CVE-2015-5123 is a high-severity vulnerability (CVSS 7.8 v3.1) affecting Flash Player (Adobe), Flash Player Desktop Runtime (Adobe), Evergreen (Opensuse) and 10 more products.
  • It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jul 5, 2015. Public exploit code is available.
  • EPSS estimates a 19% probability of exploitation in the next 30 days.
  • Fixed versions are available, including Flash Player 11.2.202.481, Flash Player 13.0.0.302, Flash Player 18.0.0.203.
  • Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

7.8

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

19%

Higher than 97.2% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2015-5123 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Known-Exploited Catalog Listings

CatalogAddedRemediation dueRansomware use
CISA KEVApr 13, 2022May 4, 2022Not reported
Industry KEV feedJul 5, 2015May 4, 2022Not reported
CIRCL KEVApr 13, 2022May 4, 2022Not reported
ENISA EUVDApr 13, 2022n/aNot reported

Required action: The impacted product is end-of-life and should be disconnected if still in use.

Affected Products

36 affected entries in total
ProductAffected versionsFixed in
Flash PlayerAdobeSee advisory11.2.202.481
Flash Player Desktop RuntimeAdobeSee advisory18.0.0.203
EvergreenOpensuse11.4n/a
Enterprise Linux DesktopRedhat5.0, 6.0n/a
Enterprise Linux ServerRedhat5.0, 6.0n/a
8 more affected products in the full CVE brief

Patched Releases

Flash Player

11.2.202.481, 13.0.0.302, 18.0.0.203, 11.2.202.491-0.11.1, 11.2.202.491-173.1, 11.2.202.491-96.1

Flash Player Desktop Runtime

18.0.0.203

flash-player-gnome

11.2.202.491-0.11.1, 11.2.202.491-173.1, 11.2.202.491-96.1

flash-player-kde4

11.2.202.491-0.11.1, 11.2.202.491-173.1

flash-plugin

0:11.2.202.491-1.el5, 0:11.2.202.491-1.el6_6

flashplugin-nonfree

11.2.202.481ubuntu0.14.04.2

Timeline

  1. Added to Industry KEV feed

    Jul 5, 2015

  2. Publicly disclosed

    Jul 10, 2015

  3. Added to CISA KEV

    Apr 13, 2022

  4. Added to CIRCL KEV

    Apr 13, 2022

  5. Added to ENISA EUVD

    Apr 13, 2022

  6. Last updated

    Feb 4, 2026

Weakness Type

  • CWE-416 Use After Free

References

15 more references in the full CVE brief

FAQ

Common Questions.

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