CVE-2026-67822

critical · 9.8

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.

9.8

CVSS

0.3%

EPSS (exploit prob.)

24th

EPSS percentile

2026-07-31

Published

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

Weaknesses

CWE-121

References

https://github.com/Tristerjh/Tenda/blob/main/Tenda_W6-S_GO_overflow.md
https://github.com/Tristerjh/Tenda/blob/main/Tenda_W6-S_GO_overflow.md

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-67822