CVE-2016-4271

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in, but needs a user to act. High risk of data exposure.

Exploit odds

4.6% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2016-09-14 18:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 00:47 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 4.6% in the next 30 days (EPSS).
• Severity: 6.5 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2016-09-14 18:59 UTC

Last modified

2026-06-17 00:47 UTC

Exploit probability

4.6% · EPSS, next 30 days

Record status

Modified

Affected

• 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

Attack profile CVSS 3.1 · 6.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2016-4271.md and follow it. Check whether this project is affected by CVE-2016-4271. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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