What’s Vulnerable › Vulnerabilities

CVE-2026-3976: Tenda W3 POST Parameter WifiMacFilterSet formWifiMacFilterSet stack-based overflow

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% 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 weakness has been identified in Tenda W3 1.0.0.3(2204). Impacted is the function formWifiMacFilterSet of the file /goform/WifiMacFilterSet of the component POST Parameter Handler. Executing a manipulation of the argument index/GO can lead to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been made available to the public and could 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-formWifiMacFilterSet-go-buffer-overflow
• https://github.com/Svigo-o/Tenda_vul/tree/main/tenda-w3-formWifiMacFilterSet-index-buffer-overflow
• https://vuldb.com/?ctiid.350411
• https://vuldb.com/?id.350411
• https://vuldb.com/?submit.769179
• https://vuldb.com/?submit.769180
• https://www.tenda.com.cn/

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