CVE-2025-13446
criticalA vulnerability has been found in Tenda AC21 16.03.08.16.
Vendor / product: Tenda — ac21 firmware
A vulnerability has been found in Tenda AC21 16.03.08.16. This vulnerability affects unknown code of the file /goform/SetSysTimeCfg. The manipulation of the argument timeZone/time leads to stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used.
CVSS
9.8
9.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2025-11-20 15:17
Modified: 2026-10-18 20:10
NVD status: Analyzed
Last synced 3 days ago
Verified against the source API 2026-10-27 07:06 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
tenda / ac21_firmware 16.03.08.16
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/Madgeaaaaa/MY_VULN_2/blob/main/Tenda/VULN8.md cna@vuldb.com
- https://github.com/Madgeaaaaa/MY_VULN_2/blob/main/Tenda/VULN9.md cna@vuldb.com
- https://vuldb.com/?ctiid.333018 cna@vuldb.com
- https://vuldb.com/?id.333018 cna@vuldb.com
- https://vuldb.com/?submit.694425 cna@vuldb.com
- https://vuldb.com/?submit.694430 cna@vuldb.com
- https://www.tenda.com.cn/ cna@vuldb.com
- https://github.com/Madgeaaaaa/MY_VULN_2/blob/main/Tenda/VULN8.md 134c704f-9b21-4f2e-91b3-4a467353bcc0
- https://github.com/Madgeaaaaa/MY_VULN_2/blob/main/Tenda/VULN9.md 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:06 UTC · record ↗