CVE-2015-5123
published 2015-07-14CVE-2015-5123: 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…
PriorityP183critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
KEVITW
CISA Known Exploited Vulnerabilitydue 2022-05-04
Exploited in the wild
EPSS
18.49%
96.9th percentile
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
15 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| adobe | flash_player | 11.0 – 11.2.202.481 | — |
| adobe | flash_player | 13.0 – 13.0.0.302 | — |
| adobe | flash_player | 18.0 – 18.0.0.203 | — |
| adobe | flash_player_desktop_runtime | 18.0 – 18.0.0.203 | — |
| opensuse | evergreen | — | — |
| redhat | enterprise_linux_desktop | — | — |
| redhat | enterprise_linux_desktop | — | — |
| redhat | enterprise_linux_server | — | — |
| redhat | enterprise_linux_server | — | — |
| redhat | enterprise_linux_server_eus | — | — |
| redhat | enterprise_linux_workstation | — | — |
| redhat | enterprise_linux_workstation | — | — |
| suse | linux_enterprise_desktop | — | — |
| suse | linux_enterprise_desktop | — | — |
| suse | linux_enterprise_workstation_extension | — | — |
Detection & IOCsextracted from sources · hover to see the quote
- →CVE-2015-5123 is a use-after-free triggered via a valueOf override on a freed Bitmap object in ActionScript 3; detect crafted SWF content invoking valueOf on BitmapData objects. ↗
- →Post-exploitation, look for Flash plugin spawning child processes that perform network reconnaissance, indicative of hands-on-keyboard attacker activity following CVE-2015-5122/5123 exploitation. ↗
- →Hunt for the registry run key value name 'adobeUpdate' pointing to wmiprivse.exe in C:\ProgramData as a persistence indicator for post-exploitation payloads dropped via this Flash exploit chain. ↗
- →Payloads PlugX, Emdivi, and IsSpace dropped as rdws.exe (later renamed wmiprivse.exe) are linked to Chinese targeted intrusion operators exploiting this Flash vulnerability. ↗
- →CVE-2015-5123 was integrated into the Angler Exploit Kit; monitor for Angler EK traffic patterns delivering Flash exploits. ↗
- ·The two in-the-wild sample hashes (31d03169... and fcecd6b6...) are attributed to CVE-2015-5122 (valueOf UAF on freed TextBox) by Zscaler; CVE-2015-5123 (valueOf UAF on freed Bitmap) is listed separately without dedicated sample hashes in the same source. ↗
- ·The CrowdStrike post-exploitation details (rdws.exe, wmiprivse.exe, adobeUpdate registry key) were confirmed to be associated with CVE-2015-5122 exploitation, not CVE-2015-5123, though both CVEs were exploited in the same campaign. ↗
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.010.0CRITICALAV:N/AC:L/Au:N/C:C/I:C/A:C
osv9.8CRITICAL
vulncheck9.8CRITICAL
cisa9.8CRITICAL
vendor_redhat9.8CRITICAL
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VulDB
Adobe Flash Player 18.0.0.203/18.0.0.204 ActionScript 3 BitmapData use after free (APSA15-04 / VU#918568)
vuldb·2026-04-22·CVSS 9.8
CVE-2015-5123 [CRITICAL] Adobe Flash Player 18.0.0.203/18.0.0.204 ActionScript 3 BitmapData use after free (APSA15-04 / VU#918568)
A vulnerability categorized as critical has been discovered in Adobe Flash Player 18.0.0.203/18.0.0.204. This vulnerability affects the function BitmapData of the component ActionScript 3. Executing a manipulation can lead to use after free.
This vulnerability is registered as CVE-2015-5123. It is possible to launch the attack remotely. Furthermore, an exploit is available.
It is advisable to upgrade the affected component.
GHSA
GHSA-6hpg-rw47-66vr: Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13
ghsa_unreviewed·2022-05-13
CVE-2015-5123 [HIGH] CWE-416 GHSA-6hpg-rw47-66vr: Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13
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.
Project0
Attacking ECMAScript Engines with Redefinition - Project Zero
project_zero·2015-08-01·CVSS 9.3
CVE-2013-0765 [CRITICAL] Attacking ECMAScript Engines with Redefinition - Project Zero
Posted by Natalie Silvanovich = function () { return n; }
ECMAScript has a property where almost all functions and variables can be dynamically redefined. This can lead to vulnerabilities in situations where native code assumes a function or variable behaves a certain way when accessed or does not have certain side effects when it can in fact be redefined. Project Zero has discovered 24 vulnerabilities involving ECMAScript redefinition in Adobe Flash in the past few months and similar issues have also been discovered in the wild. This post describes how this class of bugs works, alongside some examples of interesting bugs that have been recently patched.
ECMAScript Redefinition
Being a dynamically typed language, ECMAScript allows all functions to be redefined. For example, the JavaSc
OSV
CVE-2015-5123: Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13
osv·2015-07-14·CVSS 9.8
CVE-2015-5123 [CRITICAL] CVE-2015-5123: Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13
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.
VulnCheck
Adobe Flash Player Use-After-Free Vulnerability
vulncheck·2015·CVSS 9.8
CVE-2015-5123 [CRITICAL] CWE-416 Adobe Flash Player Use-After-Free Vulnerability
Adobe Flash Player Use-After-Free Vulnerability
Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3) implementation in Adobe Flash Player allows remote attackers to execute code or cause a denial-of-service (DoS).
Affected: Adobe Flash Player
Required Action: The impacted product is end-of-life and should be disconnected if still in use.
Exploitation References: https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit; https://www.cve.org/CVERecord?id=CVE-2015-5123; https://resources.infosecinstitute.com/topic/the-hacking-team-hack-when-hackers-have-become-the-target/; https://www.trendmicro.com/en_us/research/15/g/hacking-team-leak-uncovers-another-windows-zero-day-ms-releases-patch.html; https://www.scribd.com/document/51674
CISA
Adobe Flash Player Use-After-Free Vulnerability
cisa·2022-04-13·CVSS 9.8
CVE-2015-5123 [CRITICAL] CWE-416 Adobe Flash Player Use-After-Free Vulnerability
Vulnerability: Adobe Flash Player Use-After-Free Vulnerability
Affected: Adobe Flash Player
Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3) implementation in Adobe Flash Player allows remote attackers to execute code or cause a denial-of-service (DoS).
Required Action: The impacted product is end-of-life and should be disconnected if still in use.
Notes: https://nvd.nist.gov/vuln/detail/CVE-2015-5123
Remediation Due Date: 2022-05-04
Red Hat
flash-plugin: two code execution issues in APSA15-04 / APSB15-18
vendor_redhat·2015-07-10·CVSS 9.8
CVE-2015-5123 [CRITICAL] flash-plugin: two code execution issues in APSA15-04 / APSB15-18
flash-plugin: two code execution issues in APSA15-04 / APSB15-18
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.
No detection rules found.
No public exploits indexed.
Krebs
Third Hacking Team Flash Zero-Day Found
blogs_krebs·2015-07-14·CVSS 9.8
CVE-2015-5123 [CRITICAL] Third Hacking Team Flash Zero-Day Found
For the third time in a week, researchers have discovered a zero-day vulnerability in Adobe’s Flash Player browser plugin. Like the previous two discoveries, this one came to light only after hackers dumped online huge troves of documents stolen from Hacking Team — an Italian security firm that sells software exploits to governments around the world.
News of the latest Flash flaw comes from Trend Micro, which said it reported the bug (CVE-2015-5123) to Adobe’s Security Team. Adobe confirmed that it is working on a patch for the two outstanding zero-day vulnerabilities exposed in the Hacking Team breach.
We are likely to continue to see additional Flash zero day bugs surface as a result of this breach. Instead of waiting for Adobe to fix yet another flaw in Flash, please consider removing
Zscaler
Hacking Team Leak, Flash 0day, Exploit Payloads | Zscaler
blogs_zscaler·2015-07-08·CVSS 9.8
[CRITICAL] Hacking Team Leak, Flash 0day, Exploit Payloads | Zscaler
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Qualys
Update5 - HackingTeam 0-day for Flash | Qualys
blogs_qualys·2015-07-07·CVSS 9.8
CVE-2015-5123 [CRITICAL] Update5 - HackingTeam 0-day for Flash | Qualys
Update5: Adobe has added a second vulnerability to APSA15-04, CVE-2015-5123, which TrendMicro has found. PoC code is available but not integrated into ExploitKits yet.
Update4: Adobe has acknowledged in APSA15-04 another 0-day for Flash originating in the data dump from HackingTeam. Security researcher Webdevil documents his finding in a tweet. Adobe credits Dhanesh Kizhakkian from FireEye who documented the PoC found in the datadump and notified Adobe (first?). Adobe expects to address the vulnerability next week (during normal Patch Tuesday maybe?). According to @Kafeine the vulnerability is already in use in the Angler Exploit Kit.
Update3: Adobe has released the patch for the HackingTeam 0-day, CVE-2015-5119. Beyond that vulnerability the update APSB15-16 also addresses 42 other vuln
Qualys
Update5 - HackingTeam 0-day for Flash | Qualys
blogs_qualys·2015-07-06·CVSS 9.8
CVE-2015-5123 [CRITICAL] Update5 - HackingTeam 0-day for Flash | Qualys
Update5: Adobe has added a second vulnerability to APSA15-04 , CVE-2015-5123, which TrendMicro has found. PoC code is available but not integrated into ExploitKits yet.
Update4: Adobe has acknowledged in APSA15-04 another 0-day for Flash originating in the data dump from HackingTeam. Security researcher Webdevil documents his finding in a tweet . Adobe credits Dhanesh Kizhakkian from FireEye who documented the PoC found in the datadump and notified Adobe (first?). Adobe expects to address the vulnerability next week (during normal Patch Tuesday maybe?). According to @Kafeine the vulnerability is already in use in the Angler Exploit Kit.
Update3: Adobe has released the patch for the HackingTeam 0-day, CVE-2015-5119. Beyond that vulnerability the update APSB15-16 also addresses 42 other vu
Krebs
Third Hacking Team Flash Zero-Day Found – Krebs on Security
blogs_krebs·2015-07-01·CVSS 9.8
CVE-2015-5123 [CRITICAL] Third Hacking Team Flash Zero-Day Found – Krebs on Security
For the third time in a week, researchers have discovered a zero-day vulnerability in Adobe’s Flash Player browser plugin. Like the previous two discoveries, this one came to light only after hackers dumped online huge troves of documents stolen from Hacking Team — an Italian security firm that sells software exploits to governments around the world.
News of the latest Flash flaw comes from Trend Micro , which said it reported the bug ( CVE-2015-5123 ) to Adobe’s Security Team. Adobe confirmed that it is working on a patch for the two outstanding zero-day vulnerabilities exposed in the Hacking Team breach.
We are likely to continue to see additional Flash zero day bugs surface as a result of this breach. Instead of waiting for Adobe to fix yet another flaw in Flash, please consider remov
Recorded Future
Analyzing Attack Vector Trends by Industry, Country, and More
blogs_recorded_future
Analyzing Attack Vector Trends by Industry, Country, and More
# Analyzing Attack Vector Trends by Industry, Country, and More
Cyber security professionals are flooded with issues requiring their attention. Identifying the most significant risks can be challenging, which makes choosing where to allocate resources even more difficult. This applies to both short term tactical decisions (e.g., Which vulnerabilities do I prioritize this week?) and longer term strategic decisions (e.g., Where do I invest in technology?) for the organization.
Recorded Future provides real-time situational awareness of trending information security topics to support those critical choices. This is done by analyzing millions of documents from the Web daily. The unstructured text from security blogs, threat researchers, mainstream media, and much more is mined and given stru
Recorded Future
Analyzing Attack Vector Trends by Industry, Country, and More
blogs_recorded_future
Analyzing Attack Vector Trends by Industry, Country, and More
## Analyzing Attack Vector Trends by Industry, Country, and More
Cyber security professionals are flooded with issues requiring their attention. Identifying the most significant risks can be challenging, which makes choosing where to allocate resources even more difficult. This applies to both short term tactical decisions (e.g., Which vulnerabilities do I prioritize this week?) and longer term strategic decisions (e.g., Where do I invest in technology?) for the organization.
Recorded Future provides real-time situational awareness of trending information security topics to support those critical choices. This is done by analyzing millions of documents from the Web daily. The unstructured text from security blogs, threat researchers, mainstream media, and much more is mined and given str
Zscaler
Zscaler discovers Flash Player Vulnerabilities | 07-21-2015
blogs_zscaler
Zscaler discovers Flash Player Vulnerabilities | 07-21-2015
Provide users with seamless, secure, reliable access to applications and data.
Build and run secure cloud apps, enable zero trust cloud connectivity, and protect workloads from data center to cloud.
Provide zero trust connectivity for IoT and OT devices and secure remote access to OT systems.
Provide zero trust site-to-site connectivity and reliable access to B2B apps for partners.
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Zscaler: A Leader in the 2025 Gartner® Magic Quadrant™ for Security Service Edge (SSE)
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Crowdstrike
Falcon Zero-Day Flash Detection
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] Falcon Zero-Day Flash Detection
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Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
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Helping Non-Security Stakeholders Understand ATT&CK in 10 Minutes or Less [VI
Bugzilla
CVE-2015-5122 CVE-2015-5123 flash-plugin: two code execution issues in APSA15-04 / APSB15-18
bugzilla·2015-07-12·CVSS 9.8
CVE-2015-5122 [CRITICAL] CVE-2015-5122 CVE-2015-5123 flash-plugin: two code execution issues in APSA15-04 / APSB15-18
CVE-2015-5122 CVE-2015-5123 flash-plugin: two code execution issues in APSA15-04 / APSB15-18
Adobe Security Advisory APSA15-04 for Adobe Flash Player documents two flaws that can possibly lead to arbitrary code execution when Flash Player is used to play a specially crafted SWF file.
Quoting from the APSA15-04:
Critical vulnerabilities (CVE-2015-5122, CVE-2015-5123) have been identified in Adobe Flash Player 18.0.0.204 and earlier versions for Windows, Macintosh and Linux. Successful exploitation could cause a crash and potentially allow an attacker to take control of the affected system.
Adobe is aware of reports that exploits targeting these vulnerabilities have been published publicly. Adobe expects to make updates available during the week of July 12, 2015.
https://helpx.adobe.com
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.htmlhttp://lists.opensuse.org/opensuse-security-announce/2015-07/msg00029.htmlhttp://lists.opensuse.org/opensuse-security-announce/2015-07/msg00032.htmlhttp://marc.info/?l=bugtraq&m=144050155601375&w=2http://rhn.redhat.com/errata/RHSA-2015-1235.htmlhttp://www.kb.cert.org/vuls/id/918568http://www.securityfocus.com/bid/75710http://www.securitytracker.com/id/1032890http://www.us-cert.gov/ncas/alerts/TA15-195Ahttps://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04796784https://helpx.adobe.com/security/products/flash-player/apsa15-04.htmlhttps://helpx.adobe.com/security/products/flash-player/apsb15-18.htmlhttps://security.gentoo.org/glsa/201508-01http://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.htmlhttp://lists.opensuse.org/opensuse-security-announce/2015-07/msg00029.htmlhttp://lists.opensuse.org/opensuse-security-announce/2015-07/msg00032.htmlhttp://marc.info/?l=bugtraq&m=144050155601375&w=2http://rhn.redhat.com/errata/RHSA-2015-1235.htmlhttp://www.kb.cert.org/vuls/id/918568http://www.securityfocus.com/bid/75710http://www.securitytracker.com/id/1032890http://www.us-cert.gov/ncas/alerts/TA15-195Ahttps://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04796784https://helpx.adobe.com/security/products/flash-player/apsa15-04.htmlhttps://helpx.adobe.com/security/products/flash-player/apsb15-18.htmlhttps://security.gentoo.org/glsa/201508-01https://github.com/cisagov/vulnrichment/issues/196https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-5123
2015-07-14
Published
2022-04-13
Added to CISA KEV
Exploited in the wild