VulnTideExploited vulnerabilities, by vendor. Data as of 28 Oct 2026.
Known exploitedIn CISA's KEV catalog since 25 March 2022Ransomware use: unknown
Adobe Flash Player

CVE-2016-4171: Adobe Flash Player Remote Code Execution Vulnerability

Is it exploited?

Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 25 Mar 2022, 2,108 days after the CVE record was published.

How likely is exploitation in the next 30 days?
20.1%

EPSS score, percentile 97.4 of all scored records

How severe?
7.8 High

CVSS v3.1 base score, from CISA's enrichment of the record

What should I do?

Required action (CISA), due 15 Apr 2022: The impacted product is end-of-life and should be disconnected if still in use.

Advisories and patches (5)

Which versions are affected?

Not stated. The CVE record gives vendor and product as “n/a” and the version as “unspecified”.

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

What to do

Required action, set by CISA

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

CISA due date for this action: 15 April 2022.

Advisories and patches

Linked from CISA's catalog entry

Affected products and versions

The CVE record does not name affected products or versions: vendor and product are “n/a” and the version is “unspecified”.

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

About this vulnerability

Unspecified vulnerability in Adobe Flash Player allows for remote code execution.

Summary: CISA's KEV catalog, as of 28 Oct 2026.

  • CISA added CVE-2016-4171 to its Known Exploited Vulnerabilities (KEV) catalog on 25 Mar 2022.
  • CISA's ransomware flag for this entry is "Unknown": no evidence of ransomware use in the catalog, which is not proof of none.
  • The due date CISA sets for the required action is 15 Apr 2022.
  • The CVE record was published on 16 Jun 2016, 2,108 days before it was added to KEV.
  • The CVE record carries a CVSS v3.1 base score of 7.8 (High), taken from CISA's enrichment of the record.
  • FIRST's EPSS model puts the probability of exploitation in the next 30 days at 20.1% (percentile 97.4), as of 28 Oct 2026.
  • CISA's SSVC assessment in the CVE record: exploitation active, automatable no, technical impact total.

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.

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.

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

Timeline

DateEvent
16 Jun 2016CVE record published
25 Mar 2022Added to CISA KEV
15 Apr 2022CISA due date for the required action
17 Nov 2025CVE record last updated

References

More exploited Adobe vulnerabilities

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  • CVE-2026-71362: Adobe Commerce and Magento Incorrect Authorization Vulnerability (added 24 Sep 2026)
  • CVE-2026-75650: Adobe Commerce and Magento Improper Neutralization of Special Elements Used in a Template Engine Vulnerability (added 8 Sep 2026)
  • CVE-2026-48282: Adobe ColdFusion Path Traversal Vulnerability (added 7 Jul 2026)
  • CVE-2009-3459: Adobe Acrobat and Reader Heap-Based Buffer Overflow Vulnerability (added 20 May 2026)
  • CVE-2020-9715: Adobe Acrobat Use-After-Free Vulnerability (added 13 Apr 2026)