ExploitedIn CISA KEV

CVE-2015-5122

Exploitation confirmed. First attested on 2022-04-13 by CISA-ADP, CISA KEV, GCVE · kevintel.

Published2015-07-14
WeaknessCWE-416

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC

2015-07-1410:59CVE publishedNVD
2022-04-13Added to the CISA KEV catalogCISA KEV
2022-04-13Listed as exploited by GCVEGCVE
2022-04-13Exploitation first reportedCISA KEV
2025-11-1719:49SSVC exploitation set to activeCISA-ADP
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2015-5122?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2015-5122?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Adobe flash playerversion to verify

Branch	Affected	Fixed in	Source
13.0	≥ 13.0, ≤ 13.0.0.302	no fix published	NVD
18.0	≥ 18.0, ≤ 18.0.0.203	no fix published	NVD
18.0	≥ 18.0, ≤ 18.0.0.204	no fix published	NVD
11.x	≥ 11.0, ≤ 11.2.202.481	no fix published	NVD

Redhat enterprise linux desktop

Branch	Affected	Fixed in	Source
5.0	= 5.0	no fix published	NVD
6.0	= 6.0	no fix published	NVD

Redhat enterprise linux server

Branch	Affected	Fixed in	Source
5.0	= 5.0	no fix published	NVD
6.0	= 6.0	no fix published	NVD

6 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

CISA’s required action: The impacted product is end-of-life and should be disconnected if still in use.due 2022-05-04

Advisories and patches

helpx.adobe.comVendor Advisory
helpx.adobe.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

CISA Known Exploited Vulnerability

Date Added: 2022-04-13
Patch Due Date: 2022-05-04
Ransomware Use: Unknown
Required Action: The impacted product is end-of-life and should be disconnected if still in use.

Sources

CISA KEVKEV entry2022-04-13
GCVEexploitation2022-04-13
CISA-ADPSSVC decisionactive2025-11-17
OpenCVESSVC decisionactive—
CISA-ADPCVSS 3.17.82025-02-04
NVDCVSS 3.19.8read 2026-10-23
NVDCVSS 2.010read 2026-10-23
CISA-ADPweakness (CWE)CWE-4162025-02-04
NVDweakness (CWE)CWE-416read 2026-10-23
FIRST EPSSEPSS score93.9 %read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2015-07-14
Last Modified: 2026-06-17
NVD status: Analyzed

Frequently asked questions

What is CVE-2015-5122?

Is CVE-2015-5122 actively exploited?

Yes. CVE-2015-5122 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-05-04.

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

CVE-2015-5122 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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