CVE-2026-8138
Tenda CX12L SetPptpServerCfg” formSetPPTPServer stack-based overflow
Description
A vulnerability was found in Tenda CX12L 16.03.53.12. This issue affects the function formSetPPTPServer of the file /goform/SetPptpServerCfg”. The manipulation results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been made public and could be used.
INFO
Published Date :
May 8, 2026, 5:16 a.m.
Last Modified :
May 11, 2026, 1 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update the affected Tenda device firmware.
- Apply vendor-released security patches.
- Restrict remote access to the device.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-8138.
| URL | Resource |
|---|---|
| https://github.com/cve-a/lvdan/issues/6 | Exploit Third Party Advisory Issue Tracking |
| https://vuldb.com/submit/808867 | Third Party Advisory VDB Entry |
| https://vuldb.com/vuln/361927 | Third Party Advisory VDB Entry |
| https://vuldb.com/vuln/361927/cti | Permissions Required VDB Entry |
| https://www.tenda.com.cn/ | Product |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-8138 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-8138
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-8138 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-8138 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
May. 11, 2026
Action Type Old Value New Value Added CPE Configuration AND OR *cpe:2.3:o:tenda:cx12l_firmware:16.03.53.12:*:*:*:*:*:*:* OR cpe:2.3:h:tenda:cx12l:-:*:*:*:*:*:*:* Added Reference Type VulDB: https://github.com/cve-a/lvdan/issues/6 Types: Exploit, Issue Tracking, Third Party Advisory Added Reference Type VulDB: https://vuldb.com/submit/808867 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/vuln/361927 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/vuln/361927/cti Types: Permissions Required, VDB Entry Added Reference Type VulDB: https://www.tenda.com.cn/ Types: Product -
New CVE Received by [email protected]
May. 08, 2026
Action Type Old Value New Value Added Description A vulnerability was found in Tenda CX12L 16.03.53.12. This issue affects the function formSetPPTPServer of the file /goform/SetPptpServerCfg”. The manipulation results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been made public and could be used. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CVSS V2 (AV:N/AC:L/Au:S/C:C/I:C/A:C) Added CWE CWE-119 Added CWE CWE-121 Added Reference https://github.com/cve-a/lvdan/issues/6 Added Reference https://vuldb.com/submit/808867 Added Reference https://vuldb.com/vuln/361927 Added Reference https://vuldb.com/vuln/361927/cti Added Reference https://www.tenda.com.cn/