CVE-2026-3974: high-severity vulnerability in Tenda W3
Tenda W3 HTTP exeCommand formexeCommand stack-based overflow
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.7%
A vulnerability was identified in Tenda W3 1.0.0.3(2204). This vulnerability affects the function formexeCommand of the file /goform/exeCommand of the component HTTP Handler. Such manipulation of the argument cmdinput leads to stack-based buffer overflow. The attack may be performed from remote. The exploit is publicly available and might be used.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Affected products
Tenda · W3Related CVEs — Tenda W3
In the same product, most dangerous first.
CVE-2026-3972HIGHTenda W3 HTTP setcfm formSetCfm stack-based overflowEPSS 0.7%CVE-2026-3975HIGHTenda W3 POST Parameter WifiMacFilterGet formWifiMacFilterGet stack-based overflowEPSS 0.7%CVE-2026-4008HIGHTenda W3 POST Parameter wifiSSIDset stack-based overflowEPSS 0.7%CVE-2026-3976HIGHTenda W3 POST Parameter WifiMacFilterSet formWifiMacFilterSet stack-based overflowEPSS 0.7%CVE-2026-3973HIGHTenda W3 POST Parameter setAutoPing formSetAutoPing stack-based overflowEPSS 0.7%CVE-2026-4007HIGHTenda W3 POST Parameter wifiSSIDget stack-based overflowEPSS 0.7%