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  3. CVE-2022-24990
Exploited in the wildUsed by ransomwareServers & business softwareWork IT

CVE-2022-24990 TerraMaster TerraMaster OS: login or permission bypass

In plain words: A door that should be locked is not: part of the system can be reached without a valid login or permission. The attacker gets in as a user or administrator without knowing a password.

Confirmed exploited by CISA on · US federal patch deadline Mar 3, 2023

What to do

  1. Install TerraMaster's security update for TerraMaster OS. If no update exists, follow the vendor's workaround or stop using the product until one ships.
  2. Keep a list of every internet-facing server you run so nothing is forgotten.
  3. Patch anything in this catalog first, ahead of normal patch cycles.
  4. Put admin and file-transfer apps behind a VPN or single sign-on instead of the open internet.

Read TerraMaster's advisory ↗

Who is affected

Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.

What's at risk: Mass data theft and ransomware: a single flaw in a file-transfer or email server has exposed thousands of organisations at once.

The details

Official name
TerraMaster OS Remote Command Execution Vulnerability
Product
TerraMaster TerraMaster OS
CISA description
TerraMaster OS contains a remote command execution vulnerability that allows an unauthenticated user to execute commands on the target endpoint.
Type of flaw
Login or permission bypass (CWE-306)
Confirmed exploited
Feb 10, 2023 — known to be used in ransomware attacks
US federal patch deadline
Mar 3, 2023

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Answering about CVE-2022-24990 ·

Questions about CVE-2022-24990

Is CVE-2022-24990 being exploited?

Yes. CISA added CVE-2022-24990 to its Known Exploited Vulnerabilities catalog on Feb 10, 2023, which means there is reliable evidence of real-world attacks, including by ransomware groups.

How do I fix CVE-2022-24990?

Install TerraMaster's security update for TerraMaster OS. If no update exists, follow the vendor's workaround or stop using the product until one ships. Keep a list of every internet-facing server you run so nothing is forgotten.

Am I affected by CVE-2022-24990?

Only if you use TerraMaster TerraMaster OS. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.

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