Vulnerability · Published Feb 8, 2026 · Assigned by VulDB
CVE-2026-2139Tenda TX9 fast_setting_wifi_set sub_432580 buffer overflow
High 8.8
In plain English
A high-severity buffer overflow in TX9 from Tenda. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.7%top 45.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A vulnerability was determined in Tenda TX9 up to 22.03.02.10_multi. Affected by this vulnerability is the function sub_432580 of the file /goform/fast_setting_wifi_set. This manipulation of the argument ssid causes buffer overflow. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized.
Affected products (as reported)
Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-344774 | Tenda TX9 fast_setting_wifi_set sub_432580 buffer overflow vdb-entry, technical-description
- VDB-344774 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #747250 | Tenda TX9 V22.03.02.10_multi Buffer Overflow third-party-advisory
- https://github.com/MRAdera/IoT-Vuls/blob/main/tenda/tx9%20pro/fast_setting_wifi_set.md related
- https://github.com/MRAdera/IoT-Vuls/blob/main/tenda/tx9%20pro/fast_setting_wifi_set.md#poc exploit
- https://www.tenda.com.cn/ product