Vulnerability details

CVE-2026-3972

Tenda W3

Tenda W3 HTTP setcfm formSetCfm stack-based overflow

CVSS 4.0

8.7High

Official description

A vulnerability was found in Tenda W3 1.0.0.3(2204). Affected by this issue is the function formSetCfm of the file /goform/setcfm of the component HTTP Handler. The manipulation of the argument funcpara1 results in stack-based buffer overflow. The attack can only be performed from the local network. The exploit has been made public and could be used.

CVSS scores

Score	Version	Source	Vector
8.7High	4.0	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P`
8.8High	3.1	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R`
8.8High	3.0	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R`
8.3High	2.0	CVEProject cvelistV5 (CNA) (VulDB)	`AV:A/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR`

Affected products

Vendor	Product	Versions	Source
Tenda	W3	1.0.0.3(2204)	CVEProject cvelistV5 (CNA)

References and advisories

https://vuldb.com/?id.350407 vdb-entrytechnical-description
https://vuldb.com/?ctiid.350407 signaturepermissions-required
https://vuldb.com/?submit.769172 third-party-advisory
https://github.com/Svigo-o/Tenda_vul/tree/main/tenda-w3-setcfm-funcpara1-buffer-overflow exploit
https://www.tenda.com.cn/ product

Kolun on Telegram @kolunsec Exploited CVEs, key news and a daily digest Alerts for this product's next CVEsFollow the product to get new vulnerabilities on Telegram.

Details

Published: 2026-03-12
Last updated: 2026-03-12
State: Published
Assigner (CNA): VulDB

Exploit prediction (EPSS)

0.77%

Probability of exploitation in 30 days

55.8%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-121
Stack-based Buffer Overflow
CWE-119
Memory Corruption