Vulnerability record · CVE-2026-3804 · published 9 March 2026

CVE-2026-3804: Tenda i3 firmware memory buffer overflow vulnerability

Tenda · I3 Firmware

A security flaw has been discovered in Tenda i3 1.0.0.6(2204). This vulnerability affects the function formWifiMacFilterSet of the file /goform/WifiMacFilterSet. The manipulation of the argument index results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.

7.4 CVSS 4.0 High EPSS 1.0% · top 38.4% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow

7.4CVSS 4.0 base score, v2 9.0

1.0%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

5References, 1 tagged exploit

17 Jun 2026Last modified by NVD

Description

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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

I3 Firmware Tenda

References

Link	Tags
https://github.com/Svigo-o/Tenda_vul/tree/main/tenda-i3-formWifiMacFilterSet-index-buffer-overflow	ExploitThird Party Advisory
https://vuldb.com/?ctiid.349771	Permissions RequiredVDB Entry
https://vuldb.com/?id.349771	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.768985	Third Party AdvisoryVDB Entry
https://www.tenda.com.cn/	Product

Track CVE-2026-3804 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.4CVE-2026-3970Tenda i3 firmware memory buffer overflow vulnerabilityA flaw has been found in Tenda i3 1.0.0.6(2204). Affected is the function formwrlSSIDget of the file /goform/wifiSSIDget. Executing a manipulation of…EPSS 1.0%12 Mar 2026 7.4CVE-2026-3971Tenda i3 firmware memory buffer overflow vulnerabilityA vulnerability has been found in Tenda i3 1.0.0.6(2204). Affected by this vulnerability is the function formwrlSSIDset of the file /goform/wifiSSIDs…EPSS 1.0%12 Mar 2026 7.4CVE-2026-3803Tenda i3 firmware memory buffer overflow vulnerabilityA vulnerability was identified in Tenda i3 1.0.0.6(2204). This affects the function formWifiMacFilterGet of the file /goform/WifiMacFilterGet. The ma…EPSS 1.0%9 Mar 2026 7.4CVE-2026-3802Tenda i3 firmware memory buffer overflow vulnerabilityA vulnerability was determined in Tenda i3 1.0.0.6(2204). Affected by this issue is the function formexeCommand of the file /goform/exeCommand. Execu…EPSS 1.0%9 Mar 2026 7.4CVE-2026-3801Tenda i3 firmware memory buffer overflow vulnerabilityA vulnerability was found in Tenda i3 1.0.0.6(2204). Affected by this vulnerability is the function formSetAutoPing of the file /goform/setAutoPing. …EPSS 1.0%9 Mar 2026 7.4CVE-2026-3799Tenda i3 firmware memory buffer overflow vulnerabilityA flaw has been found in Tenda i3 1.0.0.6(2204). This impacts the function formSetCfm of the file /goform/setcfm. This manipulation of the argument f…EPSS 1.0%9 Mar 2026 5.5CVE-2026-5841Tenda i3 firmware path traversal vulnerabilityA weakness has been identified in Tenda i3 1.0.0.6(2204). The affected element is the function R7WebsSecurityHandler of the component HTTP Handler. E…EPSS 0.78%9 Apr 2026 8.8CVE-2026-8452Citrix NetScaler ADC and Gateway memory buffer overflow causes DoSCVE-2026-8452 is a memory buffer overflow (CWE-119) in Citrix NetScaler ADC and NetScaler Gateway that leads to unpredictable or erroneous behavior a…KEVEPSS 1.0%analysed30 Jun 2026

Source: NIST National Vulnerability Database (record CVE-2026-3804), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.