# CVE-2015-5123: Adobe Flash Player Use-After-Free Vulnerability

> CVE-2015-5123: Adobe Flash Player Use-After-Free Vulnerability. CVSS 7.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2015-5123
Last updated: 2025-11-17T19:54:01Z

- Published: 2015-07-14 10:00 UTC · Updated: 2025-11-17 19:54 UTC · Assigner: adobe
- CVSS: 7.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS: 18.8%, 97th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2022-04-13, federal due date 2022-05-04, ransomware use: Unknown

## 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.

## CISA required action

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

## Affected vendors and products

- Adobe: Flash Player

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2015-5123)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2015-5123)
- [http://blog.trendmicro.com/trendlabs-security-intelligence/new-zero-day-vulnerability-cve-2015-5123-in-adobe-flash-emerges-from-hacking-team-leak/](http://blog.trendmicro.com/trendlabs-security-intelligence/new-zero-day-vulnerability-cve-2015-5123-in-adobe-flash-emerges-from-hacking-team-leak/)
- [http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00028.html](http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00028.html)
- [http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00029.html](http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00029.html)
- [http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00032.html](http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00032.html)
- [http://marc.info/?l=bugtraq&m=144050155601375&w=2](http://marc.info/?l=bugtraq&m=144050155601375&w=2)
- [http://rhn.redhat.com/errata/RHSA-2015-1235.html](http://rhn.redhat.com/errata/RHSA-2015-1235.html)
- [https://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr\_na-c04796784](https://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04796784)
- [https://helpx.adobe.com/security/products/flash-player/apsa15-04.html](https://helpx.adobe.com/security/products/flash-player/apsa15-04.html)
- [https://helpx.adobe.com/security/products/flash-player/apsb15-18.html](https://helpx.adobe.com/security/products/flash-player/apsb15-18.html)
- [https://security.gentoo.org/glsa/201508-01](https://security.gentoo.org/glsa/201508-01)
- [http://www.kb.cert.org/vuls/id/918568](http://www.kb.cert.org/vuls/id/918568)
- [http://www.securityfocus.com/bid/75710](http://www.securityfocus.com/bid/75710)
- [http://www.securitytracker.com/id/1032890](http://www.securitytracker.com/id/1032890)
- [http://www.us-cert.gov/ncas/alerts/TA15-195A](http://www.us-cert.gov/ncas/alerts/TA15-195A)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2015-5123 · Markdown: https://rewindex.com/cve/CVE-2015-5123.md · JSON: https://rewindex.com/api/v1/cves/CVE-2015-5123 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:46:04.166Z