What’s Vulnerable › Vulnerabilities

CVE-2026-2140: Tenda TX9 setMacFilterCfg sub_4223E0 buffer overflow

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-02-08 · updated 2026-06-17
• Weakness: CWE-119

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.

Affected products

• Tenda Tx9 Firmware: through 22.03.02.10

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#poc
• https://vuldb.com/?ctiid.344775
• https://vuldb.com/?id.344775
• https://vuldb.com/?submit.747251
• https://vuldb.com/?submit.749747
• https://www.tenda.com.cn/

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