Vulnerability record · CVE-2026-2138 · published 8 February 2026

CVE-2026-2138: Tenda tx9 firmware memory buffer overflow vulnerability

Tenda · Tx9 Firmware

A vulnerability was found in Tenda TX9 up to 22.03.02.10_multi. Affected is the function sub_42D03C of the file /goform/SetStaticRouteCfg. The manipulation of the argument list results in buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used.

7.4 CVSS 4.0 High EPSS 0.76% · top 46.5% CWE-119 · Memory buffer overflowCWE-120 · Classic buffer overflow

7.4CVSS 4.0 base score, v2 9.0

0.76%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

6References, 2 tagged exploit

17 Jun 2026Last modified by NVD

Description

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Tx9 Firmware Tenda

References

Link	Tags
https://github.com/MRAdera/IoT-Vuls/blob/main/tenda/tx9%20pro/SetStaticRouteCfg.md	ExploitThird Party Advisory
https://github.com/MRAdera/IoT-Vuls/blob/main/tenda/tx9%20pro/SetStaticRouteCfg.md#poc	Exploit
https://vuldb.com/?ctiid.344773	Permissions RequiredVDB Entry
https://vuldb.com/?id.344773	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.747249	Third Party AdvisoryVDB Entry
https://www.tenda.com.cn/	Product

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-2138), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.