CVE-2025-9605: critical vulnerability in Tenda AC21
Tenda AC21/AC23 GetParentControlInfo stack-based overflow
Published
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.3epss 5.6%
exploitation probability
5.6%top 7% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
public PoCs found — 1
cve_referencegithub.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.mdunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Tenda AC21
In the same product, most dangerous first.
CVE-2023-2649HIGHTenda AC23 Service Port 7329 ate command injectionEPSS 9.7%CVE-2025-13446HIGHTenda AC21 SetSysTimeCfg stack-based overflowEPSS 3.9%CVE-2025-13445HIGHTenda AC21 SetIpMacBind stack-based overflowEPSS 3.9%CVE-2026-1420HIGHTenda AC23 WifiExtraSet buffer overflowEPSS 3.9%CVE-2026-0640HIGHTenda AC23 PowerSaveSet sscanf buffer overflowEPSS 3.5%CVE-2026-1638MEDIUMTenda AC21 mDMZSetCfg command injectionEPSS 2.2%
References
https://github.com/XXRicardo/iot-cve/blob/main/Tenda/AC21/AC21V1.0re_V16.03.08.16.mdhttps://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.mdhttps://vuldb.com/?ctiid.321783https://vuldb.com/?id.321783https://vuldb.com/?submit.636545https://vuldb.com/?submit.636548https://www.tenda.com.cn/