ByteOS Network

NVD Vulnerability Details :

CVE-2025-8939

Analyzed

Source-cna@vuldb.com

Published At-14 Aug, 2025 | 06:15

Updated At-19 Aug, 2025 | 18:35

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.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	4.0	7.4	HIGH	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Secondary	3.1	8.8	HIGH	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Secondary	2.0	9.0	HIGH	AV:N/AC:L/Au:S/C:C/I:C/A:C

CPE Matches

Tenda Technology Co., Ltd.

>>ac20_firmware>>Versions from 16.03.08.0(inclusive) to 16.03.08.12(inclusive)

cpe:2.3:o:tenda:ac20_firmware:*:*:*:*:*:*:*:*

Tenda Technology Co., Ltd.

>>ac20>>-

cpe:2.3:h:tenda:ac20:-:*:*:*:*:*:*:*

Weaknesses

CWE ID	Type	Source
CWE-119	Secondary	cna@vuldb.com
CWE-120	Secondary	cna@vuldb.com

References

Hyperlink	Source	Resource
https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20/Tenda%20AC20.md	cna@vuldb.com	Exploit Third Party Advisory
https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20/Tenda%20AC20.md#3-poc	cna@vuldb.com	Exploit Third Party Advisory
https://vuldb.com/?ctiid.319902	cna@vuldb.com	Permissions Required VDB Entry
https://vuldb.com/?id.319902	cna@vuldb.com	Third Party Advisory VDB Entry
https://vuldb.com/?submit.631829	cna@vuldb.com	Third Party Advisory VDB Entry
https://www.tenda.com.cn/	cna@vuldb.com	Product
https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20/Tenda%20AC20.md	134c704f-9b21-4f2e-91b3-4a467353bcc0	Exploit Third Party Advisory

CISA Catalog

Metrics

CPE Matches

Weaknesses

Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References

Change History