CVE-2026-4493 Details
Description
A vulnerability was determined in Tenda A18 Pro 02.03.02.28. The impacted element is the function sub_423B50 of the file /goform/setMacFilterCfg of the component MAC Filtering Configuration Endpoint. Executing a manipulation of the argument deviceList can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized.
A 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 MAC filtering configuration endpoint '/goform/setMacFilterCfg', within the function 'sub_423B50', which is responsible for parsing MAC filter rules. The vulnerability is triggered when the 'deviceList' parameter is manipulated with a crafted input that exploits the lack of proper input validation. This oversight allows for the overwriting of the stack frame, including the return address, potentially leading to a denial-of-service condition or remote code execution.
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
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/lilukun337/cve/issues/5 | [email protected] | ExploitIssue TrackingTechnical Description |
| https://vuldb.com/?ctiid.352019 | [email protected] | Content Wall |
| https://vuldb.com/?id.352019 | [email protected] | AdvisoryExploit |
| https://vuldb.com/?submit.773727 | [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
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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] |