Tenda AC8 16.03.33.05 Embedded Httpd Service fast_setting_wifi_set timeZone buffer overflow
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 8.4 | $0-$5k | 0.47 |
Summary
A vulnerability, which was classified as critical, was found in Tenda AC8 16.03.33.05. Affected by this issue is some unknown functionality of the file /goform/fast_setting_wifi_set of the component Embedded Httpd Service. Such manipulation of the argument timeZone leads to buffer overflow. This vulnerability is documented as CVE-2026-2203. The attack can be executed remotely. Additionally, an exploit exists.
Details
A vulnerability was found in Tenda AC8 16.03.33.05. It has been rated as critical. Affected by this issue is some unknown functionality of the file /goform/fast_setting_wifi_set of the component Embedded Httpd Service. The manipulation of the argument timeZone with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability.
The advisory is available at github.com. This vulnerability is handled as CVE-2026-2203. The exploitation is known to be easy. The attack may be launched remotely. Technical details as well as a public exploit are known.
The exploit is available 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.
The vulnerability is also documented in the vulnerability database at CNNVD (CNNVD-202602-1394). If you want to get best quality of vulnerability data, you may have to visit VulDB.
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: Buffer overflowCWE: CWE-120 / 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
02/07/2026 Advisory disclosed02/07/2026 VulDB entry created
02/10/2026 VulDB entry last update
Sources
Vendor: tenda.com.cnAdvisory: github.com
Status: Not defined
CVE: CVE-2026-2203 (🔒)
GCVE (CVE): GCVE-0-2026-2203
GCVE (VulDB): GCVE-100-344906
CNNVD: CNNVD-202602-1394 - Tenda AC8 安全漏洞
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 02/07/2026 18:54Updated: 02/10/2026 16:54
Changes: 02/07/2026 18:54 (57), 02/09/2026 05:28 (31), 02/10/2026 16:54 (6)
Complete: 🔍
Submitter: sunnyyaya
Cache ID: 216::103
Submit
Accepted
- Submit #750226: Tenda AC8 V16.03.33.05 Denial of Service (by sunnyyaya)
If you want to get best quality of vulnerability data, you may have to visit VulDB.
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