CVE-2026-2140

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-2140
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.

8.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.0 /10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:S/C:C/I:C/A:C

Exploitability : 8.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References
Link Resource
https://github.com/MRAdera/IoT-Vuls/blob/main/tenda/tx9%20pro/setMacFilterCfg.md Exploit Third Party Advisory
https://github.com/MRAdera/IoT-Vuls/blob/main/tenda/tx9%20pro/setMacFilterCfg.md#poc Exploit
https://vuldb.com/?ctiid.344775 Permissions Required VDB Entry
https://vuldb.com/?id.344775 Third Party Advisory VDB Entry
https://vuldb.com/?submit.747251 Third Party Advisory VDB Entry
https://vuldb.com/?submit.749747 Third Party Advisory VDB Entry
https://www.tenda.com.cn/ Product
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:tenda:tx9_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:tenda:tx9:-:*:*:*:*:*:*:*
History

10 Feb 2026, 19:28

Type Values Removed Values Added
CPE cpe:2.3:h:tenda:tx9:-:*:*:*:*:*:*:*
cpe:2.3:o:tenda:tx9_firmware:*:*:*:*:*:*:*:*
First Time Tenda tx9 Firmware
Tenda
Tenda tx9
References () https://github.com/MRAdera/IoT-Vuls/blob/main/tenda/tx9%20pro/setMacFilterCfg.md - () https://github.com/MRAdera/IoT-Vuls/blob/main/tenda/tx9%20pro/setMacFilterCfg.md - Exploit, Third Party Advisory
References () https://github.com/MRAdera/IoT-Vuls/blob/main/tenda/tx9%20pro/setMacFilterCfg.md#poc - () https://github.com/MRAdera/IoT-Vuls/blob/main/tenda/tx9%20pro/setMacFilterCfg.md#poc - Exploit
References () https://vuldb.com/?ctiid.344775 - () https://vuldb.com/?ctiid.344775 - Permissions Required, VDB Entry
References () https://vuldb.com/?id.344775 - () https://vuldb.com/?id.344775 - Third Party Advisory, VDB Entry
References () https://vuldb.com/?submit.747251 - () https://vuldb.com/?submit.747251 - Third Party Advisory, VDB Entry
References () https://vuldb.com/?submit.749747 - () https://vuldb.com/?submit.749747 - Third Party Advisory, VDB Entry
References () https://www.tenda.com.cn/ - () https://www.tenda.com.cn/ - Product

08 Feb 2026, 07:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-02-08 07:16

Updated : 2026-02-10 19:28

NVD link : CVE-2026-2140

Mitre link : CVE-2026-2140

CVE.ORG link : CVE-2026-2140

JSON object : View

Products Affected

tenda

  • tx9
  • tx9_firmware
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')