CVE-2026-3975: Tenda W3 POST Parameter WifiMacFilterGet formWifiMacFilterGet stack-based overflow

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-03-12 · updated 2026-06-17
Weakness: CWE-119

Description

A security flaw has been discovered in Tenda W3 1.0.0.3(2204). This issue affects the function formWifiMacFilterGet of the file /goform/WifiMacFilterGet of the component POST Parameter Handler. Performing a manipulation of the argument wl_radio results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.

Affected products

Tenda W3: 1.0.0.3(2204)

References

https://github.com/Svigo-o/Tenda_vul/tree/main/tenda-w3-formWifiMacFilterGet-index-buffer-overflow
https://vuldb.com/?ctiid.350410
https://vuldb.com/?id.350410
https://vuldb.com/?submit.769178
https://www.tenda.com.cn/

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