CVE-2022-24990
CriticalExploitedPublic exploitTerraMaster 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.
Published Feb 7, 2023 · Updated Nov 7, 2025
Key Facts
Patch immediately- CVE-2022-24990 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Terramaster Operating System (Terra-Master).
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Apr 11, 2022 and is known to be used in ransomware campaigns. Public exploit code is available.
- EPSS estimates a 83% probability of exploitation in the next 30 days.
- Fixed versions are available, including Terramaster Operating System 4.2.31.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
83%
Higher than 99.6% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings, used by ransomware
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2022-24990 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Feb 10, 2023 | Mar 3, 2023 | Known |
| Industry KEV feed | Apr 11, 2022 | Mar 3, 2023 | Known |
| CIRCL KEV | Feb 10, 2023 | Mar 3, 2023 | Known |
| ENISA EUVD | Feb 10, 2023 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Terramaster Operating SystemTerra-Master | See advisory | 4.2.31 |
Patched Releases
Terramaster Operating System
4.2.31
Timeline
Added to Industry KEV feed
Apr 11, 2022
Publicly disclosed
Feb 7, 2023
Added to CISA KEV
Feb 10, 2023
Added to CIRCL KEV
Feb 10, 2023
Added to ENISA EUVD
Feb 10, 2023
Last updated
Nov 7, 2025
Weakness Type
- CWE-306 Missing Authentication for Critical Function
References
- advisoryhttps://www.broadcom.com/support/security-center/attacksignatures/detail?asid=33732
- exploithttp://packetstormsecurity.com/files/172904/TerraMaster-TOS-4.2.29-Remote-Code-Execution.html
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
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.
Affected: Terramaster Operating System (Terra-Master). The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Apr 11, 2022 and is known to be used in ransomware campaigns.
Yes. It was added on Feb 10, 2023 with a federal remediation due date of Mar 3, 2023.
Public exploit code is available.
Fixed versions are available, including Terramaster Operating System 4.2.31.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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