CVE-2026-67822

9.8 criticalEPSS 0.5%

Critical (9.8). EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-31)
CWE: CWE-121
Published: 2026-07-31
Modified: 2026-08-31
Record from: the NVD, synced 2026-10-19

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

Check your stack JSON