CVE-2026-4492 Details
Description
A vulnerability was found in Tenda A18 Pro 02.03.02.28. The affected element is the function set_qosMib_list of the file /goform/formSetQosBand. Performing a manipulation of the argument list results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been made public and could be used.
A critical stack-based buffer overflow vulnerability has been identified in the Tenda A18 Pro router, specifically in the firmware version 02.03.02.28. The issue arises in the QoS configuration endpoint '/goform/formSetQosBand', within the 'set_qosMib_list' function. This function processes a user-controlled 'list' parameter without proper input validation, using the unsafe 'strcpy' function to copy data into a fixed-size stack buffer. This vulnerability can be exploited remotely, leading to potential arbitrary code execution or a denial-of-service condition by crashing the router's web service.
Users are advised to update to a version that addresses this vulnerability. Tenda has not provided specific guidance on this issue, but it may be recommended to replace the router with a different model.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Mar 20, 2026CISA-ADP
Assessed Mar 20, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/lilukun337/cve/issues/4 | [email protected] | ExploitIssue TrackingTechnical Description |
| https://vuldb.com/?ctiid.352018 | [email protected] | Content Wall |
| https://vuldb.com/?id.352018 | [email protected] | AdvisoryExploitPartial Content |
| https://vuldb.com/?submit.773682 | [email protected] | Technical Description |
| https://www.tenda.com.cn/ | [email protected] | Vendor |
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 A18 Pro | All versions |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 20, 2026 | New CVE Received | [email protected] |