Stack Buffer Overflow Vulnerability in Tenda AC7 Router
CVE-2026-51843

9.8CRITICAL

Key Information:

Vendor

Tenda
Status
Tenda AC7 Router
Vendor
CVE Published:
19 June 2026

What is CVE-2026-51843?

The Tenda AC7 router's firmware version v15.03.06.44 is vulnerable to a stack buffer overflow through the /goform/AdvSetMacMtuWan interface. By exploiting the wanMTU parameter, an attacker may execute arbitrary code, leading to potential unauthorized access and data breaches. Users are advised to maintain updated firmware and secure their devices against potential exploitation.

References

https://www.kdev.site/cve-request_008/

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.