TRENDnet TEW-824DRU 1.010B01/1.04B01 Web Interface apply_sec.cgi sub_420A78 Language cross site scripting
Summary
A vulnerability identified as problematic has been detected in TRENDnet TEW-824DRU 1.010B01/1.04B01. This affects the function sub_420A78 of the file apply_sec.cgi of the component Web Interface. Performing a manipulation of the argument Language results in cross site scripting.
This vulnerability is identified as CVE-2026-4354. The attack can be initiated 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 TRENDnet TEW-824DRU 1.010B01/1.04B01. This affects the function sub_420A78 of the file apply_sec.cgi of the component Web Interface. The manipulation of the argument language with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity.
The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-4354. The exploitability is told to be easy. It is possible to initiate the attack remotely. It demands that the victim is doing some kind of user interaction. Technical details and a public exploit are known. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.
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.
The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-12685). If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Product
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒
CVSSv3
VulDB Meta Base Score: 3.5VulDB Meta Temp Score: 3.3
VulDB Base Score: 3.5
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍
CNA Base Score: 3.5
CNA Vector: 🔒
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Cross site scriptingCWE: CWE-79 / CWE-94 / CWE-74
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 |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
03/17/2026 Advisory disclosed03/17/2026 VulDB entry created
03/21/2026 VulDB entry last update
Sources
Advisory: github.comStatus: Not defined
CVE: CVE-2026-4354 (🔒)
GCVE (CVE): GCVE-0-2026-4354
GCVE (VulDB): GCVE-100-351381
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 03/17/2026 19:28Updated: 03/21/2026 23:11
Changes: 03/17/2026 19:28 (58), 03/18/2026 04:13 (1), 03/21/2026 23:11 (31)
Complete: 🔍
Submitter: iC0rner
Cache ID: 216::103
Submit
Accepted
- Submit #772660: TRENDnet TEW-824DRU v1.04B01 Denial of Service (by iC0rner)
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
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