CVE-2026-8138 Details
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.
A stack-based buffer overflow vulnerability has been identified in the Tenda CX12L router, specifically in the firmware version 16.03.53.12. The issue arises in the '/goform/SetPptpServerCfg' endpoint, within the 'formSetPPTPServer()' function. The vulnerability allows remote attackers to exploit the 'startIp' parameter, leading to memory corruption, application crashes, and potentially arbitrary code execution on the device.
Users are advised to update to a version that addresses this vulnerability. Tenda has been notified and users should check the Tenda website or contact Tenda support for information on available updates.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 8, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/cve-a/lvdan/issues/6 | [email protected] | ExploitIssue TrackingThird Party Advisory |
| https://vuldb.com/submit/808867 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/361927 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/361927/cti | [email protected] | Permissions RequiredVDB Entry |
| https://www.tenda.com.cn/ | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-121 | Stack-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| tenda cx12l firmware | 16.03.53.12 |
CPE
Remediation
| |
| tenda cx12l | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 11, 2026 | Initial Analysis | [email protected] |
| May 8, 2026 | New CVE Received | [email protected] |