Critical 9.8Published Aug 28, 2025

CVE-2025-9605Tenda AC21/AC23 GetParentControlInfo stack-based overflow

Updated under an hour ago (Oct 26, 2026, 5:40 PM ET)

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It affects Tenda AC21 and 3 other products. Add what you run to find out whether that includes you.

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Every CVE for Tenda AC21

Exploited in the last 30 days

A security vulnerability has been detected in Tenda AC21 and AC23 16.03.08.16. Affected is the function GetParentControlInfo of the file /goform/GetParentControlInfo. Such manipulation of the argument mac leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
Weakness (CWE): CWE-121, 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: Analyzed
Record last updated: Aug 29, 2025
First seen by InfoSec Signals: Oct 18, 2026

Affected products

Affected products

Tenda AC21 tenda:ac21 (from the name)	16.03.08.16	CNA record
Tenda AC23 tenda:ac23 (from the name)	16.03.08.16	CNA record
tenda ac21_firmware tenda:ac21_firmware	16.03.08.16	NVD
tenda ac23_firmware tenda:ac23_firmware	16.03.08.16	NVD

References

References

https://vuldb.com/?id.321783	vdb-entry, technical-description, third-party-advisory
https://vuldb.com/?ctiid.321783	signature, permissions-required, vdb-entry
https://vuldb.com/?submit.636545	third-party-advisory, vdb-entry
https://vuldb.com/?submit.636548	third-party-advisory, vdb-entry
https://github.com/XXRicardo/iot-cve/blob/main/Tenda/AC21/AC21V1.0re_V16.03.08.16.md	related, exploit, third-party-advisory
https://github.com/XXRicardo/iot-cve/blob/main/Tenda/AC23/Stack-Based%20Buffer%20Overflow%20in%20Tenda%20Wi-Fi%205%20Router%20AC23%EF%BC%88AC23V1.0re_V16.03.07.52%EF%BC%89.md	exploit, third-party-advisory
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.