CVE-2016-7855

Name: CVE-2016-7855
Creator: NVD / NIST
Published: 2016-11-01T22:59:00.167+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10Actively ExploitedEPSS 25.20%

Last modified Jun 17, 2026

CVE-2016-7855 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Use-after-free vulnerability in Adobe Flash Player before 23.0.0.205 on Windows and OS X and before 11.2.202.643 on Linux allows remote attackers to execute arbitrary code via unspecified vectors, as exploited in the wild in October 2016.. CISA has confirmed active exploitation in the wild. EPSS estimates a 25.20% chance of exploitation in the next 30 days.

Description

Use-after-free vulnerability in Adobe Flash Player before 23.0.0.205 on Windows and OS X and before 11.2.202.643 on Linux allows remote attackers to execute arbitrary code via unspecified vectors, as exploited in the wild in October 2016.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

25.20%

97.7th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Mar 24, 2022.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Adobe	Flash Player	<= 23.0.0.185
Adobe	Flash Player	<= 11.2.202.637
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

References

http://rhn.redhat.com/errata/RHSA-2016-2119.htmlThird Party Advisory
http://www.securityfocus.com/bid/93861Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037111Third Party Advisory, VDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-128Patch, Vendor Advisory
https://helpx.adobe.com/security/products/flash-player/apsb16-36.htmlPatch, Vendor Advisory
https://security.gentoo.org/glsa/201610-10Third Party Advisory
https://security.googleblog.com/2016/10/disclosing-vulnerabilities-to-protect.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-2119.htmlThird Party Advisory
http://www.securityfocus.com/bid/93861Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037111Third Party Advisory, VDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-128Patch, Vendor Advisory
https://helpx.adobe.com/security/products/flash-player/apsb16-36.htmlPatch, Vendor Advisory
https://security.gentoo.org/glsa/201610-10Third Party Advisory
https://security.googleblog.com/2016/10/disclosing-vulnerabilities-to-protect.htmlThird Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-7855US Government Resource

Timeline

Published: Nov 1, 2016
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2016-7855?

How severe is CVE-2016-7855?

CVE-2016-7855 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 25.20% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2016-7855?

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-2016-7855?

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

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Source: NVD / NIST