CVE-2026-51846 Details
Description
In Tenda AC7 v15.03.06.44, the wanSpeed parameter of the route /goform/AdvSetMacMtuWan has a stack buffer overflow vulnerability that can lead to remote arbitrary code execution.
A stack buffer overflow vulnerability has been identified in the Tenda AC7 router, specifically in firmware version V15.03.06.44 and likely earlier versions. The vulnerability arises in the wanSpeed parameter of the /goform/AdvSetMacMtuWan route, where the strcpy function is used to copy user-controlled data into a stack buffer without proper size validation. This oversight allows attackers to craft malicious input that can overflow the buffer, potentially leading to arbitrary code execution on the device.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 22, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.kdev.site/cve-request_005/ | CISA-ADP | ExploitThird Party Advisory |
| https://www.kdev.site/cve-request_005/ | [email protected] | ExploitThird Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-121 | Stack-based Buffer Overflow | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| tenda ac7 firmware | 15.03.06.44 |
CPE
Remediation
| |
| tenda ac7 | All versions |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 9, 2026 | Initial Analysis | [email protected] |
| Jun 22, 2026 | CVE Modified | CISA-ADP |
| Jun 19, 2026 | New CVE Received | [email protected] |