CVE-2026-2186 Details
Description
A vulnerability has been found in Tenda RX3 16.03.13.11. Impacted is the function fromSetIpMacBind of the file /goform/SetIpMacBind. Such manipulation of the argument list leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed to the public and may be used.
A stack-based buffer overflow vulnerability has been identified in the Tenda RX3 router running firmware version 16.03.13.11. The issue arises in the 'fromSetIpMacBind' function within the '/goform/SetIpMacBind' endpoint. The vulnerability is caused by improper validation of the 'list' parameter, which is used to bind IP and MAC addresses. The function copies the input into a fixed-size stack buffer without checking the length, using the unsafe 'strcpy' function. This oversight allows for stack corruption by overwriting the return address, potentially leading to arbitrary code execution with root privileges. Additionally, the vulnerability can cause a denial-of-service by crashing the 'httpd' process, which manages the web interface.
No specific remediation is known, but it is recommended to use bounds-checked functions and validate input formats before processing.
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 Feb 9, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/LX-66-LX/cve-new/issues/7 | [email protected] | ExploitIssue Tracking |
| https://vuldb.com/?ctiid.344889 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.344889 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.749718 | [email protected] | Third Party AdvisoryVDB 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 rx3 firmware | 16.03.13.11 |
CPE
Remediation
| |
| tenda rx3 | 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 |
| Feb 10, 2026 | Initial Analysis | [email protected] |
| Feb 8, 2026 | New CVE Received | [email protected] |