CVE-2026-51843 — CRITICAL (9.8)

Vulnerability Description

Tenda AC7 v15.03.06.44 contains a stack buffer overflow vulnerability in the /goform/AdvSetMacMtuWan interface via the wanMTU parameter.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Tenda	Ac7 Firmware	15.03.06.44
Tenda	Ac7	-

Related Weaknesses (CWE)

CWE-121

References

https://www.kdev.site/cve-request_008/ExploitThird Party Advisory
https://www.kdev.site/cve-request_008/ExploitThird Party Advisory

FAQ

What is CVE-2026-51843?

CVE-2026-51843 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Tenda AC7 v15.03.06.44 contains a stack buffer overflow vulnerability in the /goform/AdvSetMacMtuWan interface via the wanMTU parameter.

How severe is CVE-2026-51843?

CVE-2026-51843 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-51843?

Check the references section above for vendor advisories and patch information. Affected products include: Tenda Ac7 Firmware, Tenda Ac7.