CVE-2026-2140
Tenda TX9 setMacFilterCfg sub_4223E0 buffer overflow
- State
- Published
- Severity
- 8.7 High
- Published
- Feb 8, 2026
- Updated
- Feb 23, 2026
- Reserved
- Feb 6, 2026
Description
A vulnerability was identified in Tenda TX9 up to 22.03.02.10_multi. Affected by this issue is the function sub_4223E0 of the file /goform/setMacFilterCfg. Such manipulation of the argument deviceList leads to buffer overflow. The attack may be launched remotely. The exploit is publicly available and might be used.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulDB |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R | VulDB |
| 3.0 | 8.8 High | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R | VulDB |
| 2.0 | 9.0 High | AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
TX9Tenda |
|
References
- VDB-344775 | Tenda TX9 setMacFilterCfg sub_4223E0 buffer overflowvdb-entrytechnical-description
- VDB-344775 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #747251 | Tenda TX9 V22.03.02.10_multi Buffer Overflowthird-party-advisory
- Submit #749747 | Tenda TX9 V22.03.02.18 Stack-based Buffer Overflow (Duplicate)third-party-advisory
- https://github.com/MRAdera/IoT-Vuls/blob/main/tenda/tx9%20pro/setMacFilterCfg.mdrelated
- https://github.com/MRAdera/IoT-Vuls/blob/main/tenda/tx9%20pro/setMacFilterCfg.md#pocexploit
- https://www.tenda.com.cn/product
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