CVE-2026-2203

Tenda AC8 Embedded Httpd Service fast_setting_wifi_set buffer overflow

State: Published
Severity: 8.7 High
Published: Feb 9, 2026
Updated: Feb 23, 2026
Reserved: Feb 7, 2026

Description

A flaw has been found in Tenda AC8 16.03.33.05. Affected by this vulnerability is an unknown functionality of the file /goform/fast_setting_wifi_set of the component Embedded Httpd Service. This manipulation of the argument timeZone causes buffer overflow. Remote exploitation of the attack is possible. The exploit has been published and may be used.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	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	VulDB
3.1	8.8 High	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	VulDB
3.0	8.8 High	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R	VulDB
2.0	9.0 High	AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR	VulDB

Weaknesses

CWE-120 Buffer Overflow
CWE-119 Memory Corruption

Affected Products

Product	Versions
AC8Tenda	16.03.33.05Affected

References

VDB-344906 | Tenda AC8 Embedded Httpd Service fast_setting_wifi_set buffer overflowvdb-entrytechnical-description
VDB-344906 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
Submit #750226 | Tenda AC8 V16.03.33.05 Denial of Servicethird-party-advisory
https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/Tenda/AC8/fastsettingwifiset-timezome.mdrelated
https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/Tenda/AC8/fastsettingwifiset-timezome.md#pocexploit
https://www.tenda.com.cn/product

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