CVE-2025-8939

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

A vulnerability was determined in Tenda AC20 up to 16.03.08.12. Affected is an unknown function of the file /goform/WifiGuestSet. The manipulation of the argument shareSpeed leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-119 CWE-120

Affected software

Vendor	Product	Versions
Tenda	AC20	16.03.08.0; 16.03.08.1; 16.03.08.2; 16.03.08.3; 16.03.08.4; 16.03.08.5; 16.03.08.6; 16.03.08.7; 16.03.08.8; 16.03.08.9; 16.03.08.10; 16.03.08.11; 16.03.08.12

References

https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20/Tenda%20AC20.mdExploit, Third Party Advisory
https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20/Tenda%20AC20.md#3-pocExploit, Third Party Advisory
https://vuldb.com/?ctiid.319902Permissions Required, VDB Entry
https://vuldb.com/?id.319902Third Party Advisory, VDB Entry
https://vuldb.com/?submit.631829Third Party Advisory, VDB Entry
https://www.tenda.com.cn/Product
https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20/Tenda%20AC20.mdExploit, Third Party Advisory

Timeline

Published: Aug 14, 2025
Last modified: Jun 17, 2026
NVD status: Analyzed

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