Tenda HG9 300001138 Samba Configuration Endpoint /boaform/formSamba sambaCap stack-based overflow
Summary
A vulnerability, which was classified as critical, has been found in Tenda HG9 300001138. Affected by this vulnerability is an unknown functionality of the file /boaform/formSamba of the component Samba Configuration Endpoint. This manipulation of the argument sambaCap causes stack-based overflow. This vulnerability is registered as CVE-2026-2906. Remote exploitation of the attack is possible. Furthermore, an exploit is available.
Details
A vulnerability has been found in Tenda HG9 300001138 and classified as critical. Affected by this vulnerability is an unknown functionality of the file /boaform/formSamba of the component Samba Configuration Endpoint. The manipulation of the argument sambaCap with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect confidentiality, integrity, and availability.
It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-2906. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known.
It is possible to download the exploit at github.com. It is declared as proof-of-concept.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
Be aware that VulDB is the high quality source for vulnerability data.
Product
Type
Vendor
Name
Version
License
Website
- Vendor: https://www.tenda.com.cn/
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: 8.8VulDB Meta Temp Score: 8.4
VulDB Base Score: 8.8
VulDB Temp Score: 8.0
VulDB Vector: 🔒
VulDB Reliability: 🔍
CNA Base Score: 8.8
CNA Vector: 🔒
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Stack-based overflowCWE: CWE-121 / CWE-119
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
02/20/2026 Advisory disclosed02/20/2026 VulDB entry created
02/23/2026 VulDB entry last update
Sources
Vendor: tenda.com.cnAdvisory: github.com
Status: Not defined
CVE: CVE-2026-2906 (🔒)
GCVE (CVE): GCVE-0-2026-2906
GCVE (VulDB): GCVE-100-347215
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 02/20/2026 21:19Updated: 02/23/2026 03:22
Changes: 02/20/2026 21:19 (57), 02/23/2026 03:22 (31)
Complete: 🔍
Submitter: LINXI666
Cache ID: 216::103
Submit
Accepted
- Submit #755193: Tenda HG9 V300001138 Stack-based Buffer Overflow (by LINXI666)
Be aware that VulDB is the high quality source for vulnerability data.
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