Read the docs
TI-2024-03945 Aliases CVE-2024-4240GHSA-cwvf-gq9g-7g6c

Tenda W9 formQosManageDouble_user stack-based overflow

Priority HIGH 73CWE-121Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

A vulnerability was found in Tenda W9 1.0.0.7(4456). It has been classified as critical. This affects the function formQosManageDouble_user. The manipulation of the argument ssidIndex leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The associated identifier of this vulnerability is VDB-262131. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01451 73rd percentileScored 2026-11-07
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
TendaW91.0.0.7(4456)—No fix listedCNA
  • W9 VendorTenda Affected 1.0.0.7(4456) Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:tenda:w9_firmware:1.0.0.7\(4456\):*:*:*:*:*:*:*1.0.0.7(4456)VulnerableTenda
cpe:2.3:h:tenda:w9:-:*:*:*:*:*:*:*not specified by NVDRunning onTenda
  • cpe:2.3:o:tenda:w9_firmware:1.0.0.7\(4456\):*:*:*:*:*:*:* Versions 1.0.0.7(4456) Vulnerable ·Tenda
  • cpe:2.3:h:tenda:w9:-:*:*:*:*:*:*:* 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-2024-4240
  2. 2026-10-03 Alias added: GHSA-cwvf-gq9g-7g6c

References

Other 1

  • TI-2023-27936 Tenda W9 V1.0.0.7(4456)_CN was discovered to contain a stack overflow via the function formSetUplinkInfo. CVSS 3.1CRITICAL 9.8
  • TI-2023-27932 Tenda W9 V1.0.0.7(4456)_CN was discovered to contain a stack overflow via the function formSetAutoPing. CVSS 3.1CRITICAL 9.8
  • TI-2024-00500 Tenda W9 httpd formAddSysLogRule stack-based overflow CVSS 3.1CRITICAL 9.8
  • TI-2024-03948 Tenda W9 wifiSSIDset formwrlSSIDset stack-based overflow CVSS 3.1HIGH 8.8
  • TI-2024-03946 Tenda W9 formQosManageDouble_auto stack-based overflow CVSS 3.1HIGH 8.8
  • TI-2024-00497 Tenda W9 httpd formQosManage_auto stack-based overflow CVSS 3.1CRITICAL 9.8
See all 18 →

Sources

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