Is CVE-2014-8439 actively exploited?

Yes. Previdian tracks CVE-2014-8439 as a known exploited vulnerability. Confidence is confirmed.

What exploitation activity has Previdian observed?

Previdian has not yet recorded sensor-observed exploitation attempts for CVE-2014-8439. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

Version-level data is not available; Previdian tracks Adobe Flash Player.

Yes. CVE-2014-8439 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

CVE-2014-8439 Exploited in the Wild — Flash Player

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2014-8439 is an unauthenticated vulnerability affecting Adobe Flash Player. Adobe Flash Player before 13.0.0.258 and 14.x and 15.x before 15.0.0.239 on Windows and OS X and before 11.2.202.424 on Linux, Adobe AIR...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is confirmed. Listed in CISA KEV.

Who is affected?

Adobe / Flash Player.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

Flash Player Denial of Service

Adobe Flash Player before 13.0.0.258 and 14.x and 15.x before 15.0.0.239 on Windows and OS X and before 11.2.202.424 on Linux, Adobe AIR before 15.0.0.293, Adobe AIR SDK before 15.0.0.302, and Adobe AIR SDK & Compiler before 15.0.0.302 allow attackers to execute arbitrary code or cause a denial of service (invalid pointer dereference) via unspecified vectors.

View vendor advisory

Published: 25 Nov 2014
Exploitation Reported: 25 May 2022
Attack vector: Remote
Complexity: Low
Privileges: None
User interaction: Required

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2014-8439
openSUSE-SU-2014:1562 lists.opensuse.org · Vendor Advisory http://lists.opensuse.org/opensuse-security-announce/2014-12/msg00004...
SUSE-SU-2014:1545 lists.opensuse.org · Vendor Advisory http://lists.opensuse.org/opensuse-security-announce/2014-12/msg00001...
openSUSE-SU-2014:1508 lists.opensuse.org · Vendor Advisory http://lists.opensuse.org/opensuse-security-announce/2014-11/msg00020...
RHSA-2014:1915 rhn.redhat.com · Vendor Advisory http://rhn.redhat.com/errata/RHSA-2014-1915.html
60217 secunia.com · Third-Party Advisory http://secunia.com/advisories/60217
adobe-flash-cve20148439-code-exec(98932) exchange.xforce.ibmcloud.com · VDB Entry https://exchange.xforce.ibmcloud.com/vulnerabilities/98932
1031259 securitytracker.com · VDB Entry http://www.securitytracker.com/id/1031259
71289 securityfocus.com · VDB Entry http://www.securityfocus.com/bid/71289
f-secure.com/weblog/archives/00002768.html f-secure.com · CVE Record https://www.f-secure.com/weblog/archives/00002768.html
helpx.adobe.com/security/products/flash-player/apsb14-22.html helpx.adobe.com · CVE Record http://helpx.adobe.com/security/products/flash-player/apsb14-22.html
helpx.adobe.com/security/products/flash-player/apsb14-26.html helpx.adobe.com · CVE Record http://helpx.adobe.com/security/products/flash-player/apsb14-26.html

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 25 May 2022

A trusted third party reported exploitation.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access

Source	Added
CISA First	2022-05-25 00:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts: 0; 0; 0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

8.8 High

Potential damage if exploited. Separate from whether attackers are using it.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

20.4%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Use After Free CWE-416

All CVSS Scores

CVSS v3.1 8.8 High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v2.0 10.0 High

AV:N/AC:L/Au:N/C:C/I:C/A:C

Timeline

From disclosure to observed exploitation

25 May 2022
00:00 UTC

Added to CISA KEV

Listed in the CISA Known Exploited Vulnerabilities catalog
25 Nov 2014
23:00 UTC

CVE published

Vulnerability disclosed publicly
22 Oct 2014
00:00 UTC

CVE ID reserved

Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2014-8439

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2014-8439",
  "confidence": "Confirmed",
  "cvss_score": 8.8,
  "cvss_estimated": false,
  "epss_score": 0.20369,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}