CVE-2016-4171
CRITICALCVSS 9.8/10Actively ExploitedEPSS 19.90%
Last modified
CVE-2016-4171 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Unspecified vulnerability in Adobe Flash Player 21.0.0.242 and earlier allows remote attackers to execute arbitrary code via unknown vectors, as exploited in the wild in June 2016.. CISA has confirmed active exploitation in the wild. EPSS estimates a 19.90% chance of exploitation in the next 30 days.
Description
Unspecified vulnerability in Adobe Flash Player 21.0.0.242 and earlier allows remote attackers to execute arbitrary code via unknown vectors, as exploited in the wild in June 2016.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Adobe | Flash Player | <= 11.2.202.621 |
| Adobe | Flash Player | <= 21.0.0.242 |
| Adobe | Flash Player | <= 18.0.0.352 |
| Redhat | Enterprise Linux Desktop | 5.0 |
| Redhat | Enterprise Linux Desktop | 6.0 |
| Redhat | Enterprise Linux Server | 5.0 |
| Redhat | Enterprise Linux Server | 6.0 |
| Redhat | Enterprise Linux Workstation | 5.0 |
| Redhat | Enterprise Linux Workstation | 6.0 |
| Opensuse | Opensuse | 13.1 |
| Opensuse | Opensuse | 13.2 |
| Suse | Linux Enterprise Desktop | 12 |
| Suse | Linux Enterprise Workstation Extension | 12 |
References
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00031.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00035.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00038.htmlMailing List, Third Party Advisory
- http://www.securityfocus.com/bid/91184Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1036094Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2016:1238Third Party Advisory
- https://security.gentoo.org/glsa/201606-08Third Party Advisory
- https://www.kb.cert.org/vuls/id/748992Third Party Advisory, US Government Resource
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00031.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00035.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00038.htmlMailing List, Third Party Advisory
- http://www.securityfocus.com/bid/91184Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1036094Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2016:1238Third Party Advisory
- https://security.gentoo.org/glsa/201606-08Third Party Advisory
- https://www.kb.cert.org/vuls/id/748992Third Party Advisory, US Government Resource
- https://github.com/cisagov/vulnrichment/issues/196Issue Tracking
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-4171US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2016-4171?
Unspecified vulnerability in Adobe Flash Player 21.0.0.242 and earlier allows remote attackers to execute arbitrary code via unknown vectors, as exploited in the wild in June 2016.
How severe is CVE-2016-4171?
CVE-2016-4171 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 19.90% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.
How do I fix CVE-2016-4171?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2016-4171?
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Scan your code nowSource: NVD / NIST