High 8.8Published Aug 14, 2026

CVE-2026-19821Tenda AC12 httpd web management interface SetSysAutoRebbotCfg formSetRebootTimer buffer overflow

Updated under an hour ago (2026-10-19 07:30 UTC)

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It affects Tenda AC12. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Tenda AC12

Exploited in the last 30 days

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: 8.8 HIGH (v3.1, CNA)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
Weakness (CWE): CWE-120, CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Aug 18, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Tenda AC12 tenda:ac12	15.03.06.23_multi_TD01	CNA record

References

https://vuldb.com/vuln/389954vdb-entry, technical-description
https://vuldb.com/vuln/389954/ctisignature, permissions-required
https://vuldb.com/cve/CVE-2026-19821third-party-advisory
https://vuldb.com/submit/868922third-party-advisory
https://github.com/lipenghai/iot_bug/blob/main/Tenda/AC12/4.mdexploit
https://www.tenda.com.cn/product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.