---
id: "CVE-2022-24990"
kind: "vulnerability"
aliases: ["CVE-2022-24990"]
title: "terra-master terramaster operating system: TerraMaster NAS 4.2.29 and earlier allows remote attackers to discover the administrative password by sending\u2026"
severity: "critical"
cvss: 9.8
epss: null
exploited: true
status: "open"
category: "infrastructure"
products: [{"name": "TerraMaster TerraMaster OS", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "terra-master terramaster operating system", "fixed": ["4.2.31"], "affected": "< 4.2.31", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["exploited", "infrastructure", "nas", "ransomware", "self-hosted", "terramaster"]
not_affected_if: ["not-terramaster-nas"]
published_at: "2023-02-07T18:15:09+00:00"
first_seen_at: "2026-10-23T19:11:52+00:00"
updated_at: "2026-10-23T22:29:04+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2022-24990", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-24990", "first_seen_at": "2026-10-23T22:29:04+00:00"}]
---

# terra-master terramaster operating system: TerraMaster NAS 4.2.29 and earlier allows remote attackers to discover the administrative password by sending…

TerraMaster OS, the operating system on TerraMaster NAS devices, has a remote command execution flaw that needs no login. An unauthenticated attacker can run commands on the device, and CISA lists it as actively exploited, with ransomware use noted.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:TerraMaster TerraMaster OS affected ? fixed ?
- vendor:terra-master terramaster operating system affected < 4.2.31 fixed 4.2.31

## Fix

Apply the vendor update per CISA guidance; the fixed version is unknown from the sources.

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2022-24990
- 2026-10-23T22:29:04+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2022-24990

## From the sources

TerraMaster NAS 4.2.29 and earlier allows remote attackers to discover the administrative password by sending "User-Agent: TNAS" to module/api.php?mobile/webNasIPS and then reading the PWD field in the response.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_