ThingsGateway 12 /api/file/download fileName path traversal
Summary
A vulnerability categorized as critical has been discovered in ThingsGateway 12. This vulnerability affects unknown code of the file /api/file/download. The manipulation of the argument fileName results in path traversal. This vulnerability is identified as CVE-2026-4233. The attack can be executed remotely. Additionally, an exploit exists. The vendor was contacted early about this disclosure but did not respond in any way.
Details
A vulnerability, which was classified as problematic, was found in ThingsGateway 12. Affected is an unknown functionality of the file /api/file/download. The manipulation of the argument fileName with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality.
The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-4233. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details and a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1006.
The exploit is shared for download at github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
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Product
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 4.3VulDB Meta Temp Score: 3.9
VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔒
VulDB Reliability: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Path traversalCWE: CWE-22
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Yes
Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
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| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
03/15/2026 Advisory disclosed03/15/2026 VulDB entry created
03/15/2026 VulDB entry last update
Sources
Advisory: github.comStatus: Not defined
CVE: CVE-2026-4233 (🔒)
GCVE (CVE): GCVE-0-2026-4233
GCVE (VulDB): GCVE-100-351156
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 03/15/2026 19:54Changes: 03/15/2026 19:54 (55)
Complete: 🔍
Submitter: sourbyte
Cache ID: 216::103
Submit
Accepted
- Submit #771234: ThingsGateway v12 Unauthorized Download Vulnerability (by sourbyte)
Once again VulDB remains the best source for vulnerability data.
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