Is CVE-2015-5122 being actively exploited?

Yes. CVE-2015-5122 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added on April 13, 2022.

What is the CVSS score for CVE-2015-5122?

CVE-2015-5122 has a CVSS 3.1 base score of 9.8 (CRITICAL).

CVE-2015-5122

CRITICAL · CVSS 9.8CISA KEV: actively exploitedEPSS 93.9%EU EUVD: exploited

Use-after-free vulnerability in the DisplayObject 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 leverages improper handling of the opaqueBackground property, as exploited in the wild in July 2015.

Key facts

CVSS score: 9.8 (v3.1)
Severity: CRITICAL
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-416
EPSS score: 93.9% (100th percentile)
In CISA KEV: Yes, added April 13, 2022
In EU EUVD: Yes (EUVD-2015-5137)
Published: July 14, 2015
NVD last modified: June 17, 2026
Status: Analyzed

CISA Known Exploited Vulnerability

Adobe Flash Player Use-After-Free Vulnerability

Added to the KEV catalog on April 13, 2022; federal remediation due May 4, 2022.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2015-5137 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on November 17, 2025.

View on the EU Vulnerability Database

Affected products

adobe / flash player
adobe / flash player
adobe / flash player
adobe / flash player
adobe / flash player
adobe / flash player desktop runtime
apple / macos
linux / linux kernel
microsoft / windows
microsoft / windows 8
microsoft / windows 8.1
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 desktop
suse / linux enterprise workstation extension

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Red Hat Enterprise Linux 5 OpenSSH-Server Cryptographic Module - Red Hat®, Inc. - FIPS 140 1384 - historical

References

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://packetstormsecurity.com/files/132663/Adobe-Flash-opaqueBackground-Use-After-Free.html(Exploit, Third Party Advisory, VDB Entry)
http://rhn.redhat.com/errata/RHSA-2015-1235.html(Third Party Advisory)
http://www.kb.cert.org/vuls/id/338736(Third Party Advisory, US Government Resource)
http://www.rapid7.com/db/modules/exploit/multi/browser/adobe_flash_opaque_background_uaf(Third Party Advisory)
http://www.securityfocus.com/bid/75712(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://github.com/cisagov/vulnrichment/issues/196(Issue Tracking)
https://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04796784(Broken Link, Third Party Advisory)
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04952467(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://perception-point.io/2018/04/11/breaking-cfi-cve-2015-5122-coop/(Broken Link, Third Party Advisory)
https://perception-point.io/new/breaking-cfi.php(Broken Link, Third Party Advisory)
https://security.gentoo.org/glsa/201508-01(Third Party Advisory)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-5122(US Government Resource)
https://www.exploit-db.com/exploits/37599/(Exploit, Third Party Advisory, VDB Entry)
https://www.fireeye.com/blog/threat-research/2015/07/cve-2015-5122_-_seco.html(Broken Link, Third Party Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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