CVE-2026-19821

Tenda AC12 httpd web management interface SetSysAutoRebbotCfg formSetRebootTimer buffer overflow

State: Published
Severity: 8.7 High
Published: Aug 14, 2026
Updated: Aug 18, 2026
Reserved: Aug 14, 2026

Description

A vulnerability was determined in Tenda AC12 15.03.06.23_multi_TD01. This vulnerability affects the function formSetRebootTimer of the file /goform/SetSysAutoRebbotCfg of the component httpd web management interface. This manipulation of the argument rebootTime causes buffer overflow. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized.

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
AC12Tenda	15.03.06.23_multi_TD01Affected

References

VDB-389954 | Tenda AC12 httpd web management interface SetSysAutoRebbotCfg formSetRebootTimer buffer overflowvdb-entrytechnical-description
VDB-389954 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
CVE-2026-19821 | CVE Analysis and Reportthird-party-advisory
Submit #868922 | Tenda AC12 US_AC1206V1.0RTL_V15.03.06.23_multi_TD01.bin Buffer Overflowthird-party-advisory
https://github.com/lipenghai/iot_bug/blob/main/Tenda/AC12/4.mdexploit
https://www.tenda.com.cn/product

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