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Exploited in the wildComputers & everyday appsCould reach you

CVE-2016-4171 Adobe Flash Player: command or code injection

In plain words: The program treats text it receives as instructions instead of plain data. The attacker can run commands on the machine — often the whole device is taken over.

Confirmed exploited by CISA on · US federal patch deadline Apr 15, 2022

What to do

  1. Install Adobe's security update for Flash Player. If no update exists, follow the vendor's workaround or stop using the product until one ships.
  2. Turn on automatic updates for the operating system and for Office, PDF and archive apps.
  3. Be careful with unexpected attachments — documents, .zip/.rar files and shortcuts are common bait.
  4. Use a normal (non-admin) account day to day and keep built-in protection like Microsoft Defender on.

Who is affected

Could reach you. This one is aimed at devices or apps of the kind people own.

What's at risk: Your files, saved passwords and accounts. Many of these let a program that is already running gain full administrator control.

The details

Official name
Adobe Flash Player Remote Code Execution Vulnerability
Product
Adobe Flash Player
CISA description
Unspecified vulnerability in Adobe Flash Player allows for remote code execution.
Type of flaw
Command or code injection
Confirmed exploited
Mar 25, 2022
US federal patch deadline
Apr 15, 2022

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Answering about CVE-2016-4171 ·

Questions about CVE-2016-4171

Is CVE-2016-4171 being exploited?

Yes. CISA added CVE-2016-4171 to its Known Exploited Vulnerabilities catalog on Mar 25, 2022, which means there is reliable evidence of real-world attacks.

How do I fix CVE-2016-4171?

Install Adobe's security update for Flash Player. If no update exists, follow the vendor's workaround or stop using the product until one ships. Turn on automatic updates for the operating system and for Office, PDF and archive apps.

Am I affected by CVE-2016-4171?

Only if you use Adobe Flash Player. This one is aimed at devices or apps of the kind people own.

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