PT-2026-6967 · Tenda · Tenda Tx9

Kdb3169 · CVE-2026-2140 · Published 2026-01-27 · Updated 2026-02-13

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Tenda TX9 versions up to 22.03.02.10 multi

Description A flaw exists in the Tenda TX9 device, specifically within the sub 4223E0 function located in the /goform/setMacFilterCfg file. Manipulation of the deviceList argument can trigger a buffer overflow. This issue can be exploited remotely. The exploit is publicly available.

Recommendations Update to a version later than 22.03.02.10 multi.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

CWE-119

Related Identifiers

BDU:2026-02488

CVE-2026-2140

Affected Products

Tenda Tx9

References · 15

• 🔥 https://github.com/MRAdera/IoT-Vuls/blob/main/tenda/tx9%20pro/setMacFilterCfg.md · Exploit
• 🔥 https://github.com/MRAdera/IoT-Vuls/blob/main/tenda/tx9%20pro/setMacFilterCfg.md#poc · Exploit
• https://osv.dev/vulnerability/CVE-2026-2140 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-02488 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-2140 · Security Note
• https://vuldb.com/?id.344775 · Note
• https://vuldb.com/?submit.749747 · Note
• https://t.me/cveNotify/151287 · Telegram Post
• https://twitter.com/cracbot/status/2022264556824002781 · Twitter Post
• https://t.me/CVEtracker/44090 · Telegram Post
• https://vuldb.com/?ctiid.344775 · Note
• https://tenda.com.cn · Note
• https://twitter.com/CVEnew/status/2020406419451728120 · Twitter Post
• https://vuldb.com/?submit.747251 · Note
• https://twitter.com/transilienceai/status/2020530395922473392 · Twitter Post