CVE-2026-67822

Tenda W6-S 1.0.0.4(510) contains a stack-based buffer overflow vulnerability in the /goform/wifiSSIDset endpoint. The function formwrlSSIDset uses sprintf to copy user-controlled 'GO' and 'index' parameters into a 64-byte stack buffer without length restriction, leading to stack overflow.

Fix

Available

CVSS 3.1

9.8 CRITICAL

EPSS

0.3% (22th percentile)

Weakness

CWE-121

NVD status

Received

Published

2026-07-31