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TI-2026-03440 Aliases CVE-2026-3976GHSA-956f-fcv4-hgpq

Tenda W3 POST Parameter WifiMacFilterSet formWifiMacFilterSet stack-based overflow

Priority HIGH 73CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00722 54th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TendaW31.0.0.3(2204)—No fix listedCNA
  • W3 VendorTenda Affected 1.0.0.3(2204) Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:tenda:w3_firmware:1.0.0.3\(2204\):*:*:*:*:*:*:*1.0.0.3(2204)VulnerableTenda
cpe:2.3:h:tenda:w3:-:*:*:*:*:*:*:*not specified by NVDRunning onTenda
  • cpe:2.3:o:tenda:w3_firmware:1.0.0.3\(2204\):*:*:*:*:*:*:* Versions 1.0.0.3(2204) Vulnerable ·Tenda
  • cpe:2.3:h:tenda:w3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Tenda

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-3976
  2. 2026-10-03 Alias added: GHSA-956f-fcv4-hgpq

References

Exploit 2

Other 1

  • TI-2026-03471 Tenda W3 POST Parameter wifiSSIDset stack-based overflow CVSS 4.0HIGH 8.7
  • TI-2026-03470 Tenda W3 POST Parameter wifiSSIDget stack-based overflow CVSS 4.0HIGH 8.7
  • TI-2026-03439 Tenda W3 POST Parameter WifiMacFilterGet formWifiMacFilterGet stack-based overflow CVSS 4.0HIGH 8.7
  • TI-2026-03438 Tenda W3 HTTP exeCommand formexeCommand stack-based overflow CVSS 4.0HIGH 8.7
  • TI-2026-03437 Tenda W3 POST Parameter setAutoPing formSetAutoPing stack-based overflow CVSS 4.0HIGH 8.7
  • TI-2026-03436 Tenda W3 HTTP setcfm formSetCfm stack-based overflow CVSS 4.0HIGH 8.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences