High severity · published Aug 14, 2026
CVE-2026-19821
Tenda AC12 httpd web management interface SetSysAutoRebbotCfg formSetRebootTimer buffer overflow
8.8
CVSS
0.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 58% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
AC12 · Tenda
15.03.06.23_multi_TD01 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-19821
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-19821
github.com
https://github.com/lipenghai/iot_bug/blob/main/Tenda/AC12/4.md
vuldb.com
https://vuldb.com/cve/CVE-2026-19821
vuldb.com
https://vuldb.com/submit/868922
vuldb.com
https://vuldb.com/vuln/389954
vuldb.com
https://vuldb.com/vuln/389954/cti
www.tenda.com.cn
https://www.tenda.com.cn/