CVE-2015-5123

Exp

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.

Published: 2015-07-14 Last update: 2026-04-21 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-5123 is rated Critical Active Threat (93.3/100): CVSS Critical severity, with high exploitation likelihood (EPSS 41.00%, 97th percentile). CISA KEV confirms active exploitation (added 2022-04-13) affecting Adobe / Flash Player. a weakness (CWE-416) Unauthenticated remote administrative access may be possible. The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2015-5123

Name: Adobe Flash Player Use-After-Free Vulnerability · CISA KEV detail

Exploit added: 2022-04-13

Action due: 2022-05-04

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

Exploit prediction scoring system (EPSS) score for CVE-2015-5123

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-22 47.56% 41.00% -6.56%
2 2025-11-18 45.20% 47.56% +2.36%
3 2025-06-01 — 45.20% —

Full EPSS history (25 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-5123

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2015-5123

OS Trackers for CVE-2015-5123

vendor priority summary link
gentoo normal CVE-2015-5123: 1 GLSA(s) (201508-01), 1 atom(s) (www-plugins/adobe-flash); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2015-5123
redhat critical — https://access.redhat.com/security/cve/CVE-2015-5123
ubuntu medium CVE-2015-5123 medium priority: Ubuntu including 2 source packages (adobe-flashplugin, flashplugin-nonfree), 10 status rows across 5 suites (precise, trusty, upstream, utopic, vivid): released 10. https://ubuntu.com/security/CVE-2015-5123

Affected software / configurations for CVE-2015-5123

Vendor Product Version Raw CPE
redhat enterprise_linux_desktop 5.0 cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 6.0 cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 5.0 cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 6.0 cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_server_eus 6.6 cpe:2.3:o:redhat:enterprise_linux_server_eus:6.6:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 5.0 cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 6.0 cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
opensuse evergreen 11.4 cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*
suse linux_enterprise_desktop 11 cpe:2.3:o:suse:linux_enterprise_desktop:11:sp3:*:*:*:*:*:*
suse linux_enterprise_desktop 11 cpe:2.3:o:suse:linux_enterprise_desktop:11:sp4:*:*:*:*:*:*
suse linux_enterprise_desktop 12 cpe:2.3:o:suse:linux_enterprise_desktop:12:*:*:*:*:*:*:*
suse linux_enterprise_workstation_extension 12 cpe:2.3:o:suse:linux_enterprise_workstation_extension:12:*:*:*:*:*:*:*
adobe flash_player >= 11.0, <= 11.2.202.481 cpe:2.3:a:adobe:flash_player:*:*:*:*:*:*:*:*
adobe flash_player >= 13.0, <= 13.0.0.302 cpe:2.3:a:adobe:flash_player:*:*:*:*:esr:*:*:*
adobe flash_player >= 18.0, <= 18.0.0.203 cpe:2.3:a:adobe:flash_player:*:*:*:*:chrome:*:*:*
adobe flash_player_desktop_runtime >= 18.0, <= 18.0.0.203 cpe:2.3:a:adobe:flash_player_desktop_runtime:*:*:*:*:*:*:*:*

References for CVE-2015-5123

URL Tags
http://blog.trendmicro.com/trendlabs-security-intelligence/new-zero-day-vulnerability-cve-2015-5123-in-adobe-flash-emerges-from-hacking-team-leak/ Broken Link Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00028.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00029.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00032.html Mailing List Third Party Advisory
http://marc.info/?l=bugtraq&m=144050155601375&w=2 Mailing List Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-1235.html Third Party Advisory
http://www.kb.cert.org/vuls/id/918568 Third Party Advisory US Government Resource
http://www.securityfocus.com/bid/75710 Broken Link Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1032890 Broken Link Third Party Advisory VDB Entry
http://www.us-cert.gov/ncas/alerts/TA15-195A Third Party Advisory US Government Resource
https://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04796784 Broken Link Third Party Advisory
https://helpx.adobe.com/security/products/flash-player/apsa15-04.html Broken Link Vendor Advisory
https://helpx.adobe.com/security/products/flash-player/apsb15-18.html Broken Link Vendor Advisory
https://security.gentoo.org/glsa/201508-01 Third Party Advisory
https://github.com/cisagov/vulnrichment/issues/196 Issue Tracking
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-5123 US Government Resource
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