CVE-2026-19821

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 v4.0

7.4 HIGHCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

9.0 HIGHAV:N/AC:L/Au:S/C:C/I:C/A:C

EPSS

0.47% chance of exploitation in the next 30 days, 39th percentile

Published

2026-08-14

Updated

2026-08-18

Proof-of-concept exploits (1)

• lipenghai/iot_bug/blob/main/Tenda/AC12/4.md

References

• CVE Record
• NVD entry

Related

• CVE-2026-19788
• CVE-2026-19789
• CVE-2026-19790
• CVE-2026-19791
• CVE-2026-19792
• CVE-2026-8344