CVE-2016-4271

Name: CVE-2016-4271
Creator: NVD / NIST
Published: 2016-09-14T18:59:00.153+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 4.55%

Last modified Jun 17, 2026

CVE-2016-4271 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Adobe Flash Player before 18.0.0.375 and 19.x through 23.x before 23.0.0.162 on Windows and OS X and before 11.2.202.635 on Linux allows attackers to bypass intended access restrictions and obtain sensitive information via unspecified vectors, a different vulnerability than CVE-2016-4277 and CVE-2016-4278, aka a "local-with-filesystem Flash sandbox bypass" issue.. EPSS estimates a 4.55% chance of exploitation in the next 30 days.

Description

Adobe Flash Player before 18.0.0.375 and 19.x through 23.x before 23.0.0.162 on Windows and OS X and before 11.2.202.635 on Linux allows attackers to bypass intended access restrictions and obtain sensitive information via unspecified vectors, a different vulnerability than CVE-2016-4277 and CVE-2016-4278, aka a "local-with-filesystem Flash sandbox bypass" issue.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

4.55%

90.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Adobe	Flash Player	<= 11.2.202.632
Adobe	Flash Player	<= 22.0.0.211
Adobe	Flash Player Desktop Runtime	<= 22.0.0.211
Adobe	Flash Player	<= 18.0.0.366

References

http://lab.truel.it/flash-sandbox-bypass/Broken Link, Technical Description, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-1865.htmlThird Party Advisory
http://www.securitytracker.com/id/1036791Broken Link, Third Party Advisory, VDB Entry
https://blog.bjornweb.nl/2017/02/flash-bypassing-local-sandbox-data-exfiltration-credentials-leak/Exploit, Third Party Advisory
https://helpx.adobe.com/security/products/flash-player/apsb16-29.htmlPatch, Vendor Advisory
https://security.gentoo.org/glsa/201610-10Third Party Advisory
http://lab.truel.it/flash-sandbox-bypass/Broken Link, Technical Description, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-1865.htmlThird Party Advisory
http://www.securitytracker.com/id/1036791Broken Link, Third Party Advisory, VDB Entry
https://blog.bjornweb.nl/2017/02/flash-bypassing-local-sandbox-data-exfiltration-credentials-leak/Exploit, Third Party Advisory
https://helpx.adobe.com/security/products/flash-player/apsb16-29.htmlPatch, Vendor Advisory
https://security.gentoo.org/glsa/201610-10Third Party Advisory

Timeline

Published: Sep 14, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-4271?

How severe is CVE-2016-4271?

CVE-2016-4271 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 4.55% probability of exploitation in the next 30 days.

How do I fix CVE-2016-4271?

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.

Are you affected by CVE-2016-4271?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST