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Vulnerabilities

Vulnerability · CVE-2016-7855

Adobe Flash Player Use-After-Free Vulnerability

Published Oct 21, 2016 · catalog updated Jun 16, 2026 · Adobe Flash Player

Patch now

CVE-2016-7855 is in the CISA known-exploited catalog, due Mar 24, 2022. Confirm Adobe Flash Player against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
High8.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
25.20%
Remediation
Remediation guidance
Affected products
cpe adobe/flash player · cpe redhat/enterprise linux desktop · cpe redhat/enterprise linux server · vendor Adobe Flash Player

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe adobe/flash playerversion unspecified
  • cpe redhat/enterprise linux desktop5.0
  • cpe redhat/enterprise linux desktop6.0
  • cpe redhat/enterprise linux server5.0
  • vendor Adobe Flash Playerversion unspecified

How to fix CVE-2016-7855

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2016-7855 is in the CISA known-exploited catalog, due Mar 24, 2022. Confirm Adobe Flash Player against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with redhat/enterprise linux desktop 5.0; redhat/enterprise linux desktop 6.0; redhat/enterprise linux server 5.0. The impacted product is end-of-life and should be disconnected if still in use.

What should an analyst verify?

CWE-416: Use After Free. EPSS 25.20%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 1, 2016 · Catalog

    Detected

    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.

  2. Mar 3, 2022 · CISA KEV

    Known exploited

    The impacted product is end-of-life and should be disconnected if still in use.

  3. Mar 24, 2022 · CISA KEV

    Remediation due

    The impacted product is end-of-life and should be disconnected if still in use.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Sources

  • CISA KEVConfirmed exploitationCVE-2016-7855

    Use-after-free vulnerability in Adobe Flash Player Windows and OS and Linux allows remote attackers to execute arbitrary code.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2016-7855

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2016-7855

    30-day exploitation probability 25.2%

    first.org
  • NIST NVDVulnerability recordCVE-2016-7855

    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.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2016-7855

    Use-after-free vulnerability in Adobe Flash Player Windows and OS and Linux allows remote attackers to execute arbitrary code.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.