CVE-2016-4117

CRITICAL
2016-05-11 [email protected]
9.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
Analysis Generated
Mar 26, 2026 - 11:18 vuln.today
PoC Detected
Nov 17, 2025 - 20:15 vuln.today
Public exploit code
Added to CISA KEV
Nov 17, 2025 - 20:15 cisa
CISA KEV
CVE Published
May 11, 2016 - 01:59 nvd
CRITICAL 9.8

Description

Adobe Flash Player 21.0.0.226 and earlier allows remote attackers to execute arbitrary code via unspecified vectors, as exploited in the wild in May 2016.

Analysis

Adobe Flash Player 21.0.0.226 and earlier allows unauthenticated remote code execution via unspecified vectors, exploited as a zero-day in May 2016 in targeted attacks before any patch was available.

Technical Context

The vulnerability in Flash Player's content processing engine allows attackers to achieve arbitrary code execution through crafted SWF content. Adobe provided minimal technical details, but the zero-day nature and active exploitation confirmed its severity.

Affected Products

['Adobe Flash Player 21.0.0.226 and earlier (all platforms)']

Remediation

Flash Player is end-of-life. Remove all installations. This was one of the many Flash zero-days that ultimately led to Flash's deprecation.

Priority Score

222
Low Medium High Critical
KEV: +50
EPSS: +92.8
CVSS: +49
POC: +20

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CVE-2016-4117 vulnerability details – vuln.today
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