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.

CVSS v3 8.8 HIGH
CVSS v2.0 9.0 HIGH

8.8^/10

CVSS v3 : HIGH

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

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

No history.

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')

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