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Vulnerability record · CVE-2026-3803 · published 9 March 2026

CVE-2026-3803: Tenda i3 firmware memory buffer overflow vulnerability

Tenda · I3 Firmware

A vulnerability was identified in Tenda i3 1.0.0.6(2204). This affects the function formWifiMacFilterGet of the file /goform/WifiMacFilterGet. The manipulation of the argument index leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.

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

A vulnerability was identified in Tenda i3 1.0.0.6(2204). This affects the function formWifiMacFilterGet of the file /goform/WifiMacFilterGet. The manipulation of the argument index leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.

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.

References

LinkTags
https://github.com/Svigo-o/Tenda_vul/tree/main/tenda-i3-formWifiMacFilterGet-index-buffer-overflow ExploitThird Party Advisory
https://vuldb.com/?ctiid.349770 Permissions RequiredVDB Entry
https://vuldb.com/?id.349770 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.768984 Third Party AdvisoryVDB Entry
https://www.tenda.com.cn/ Product

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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%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%7.4CVE-2026-3804Tenda i3 firmware memory buffer overflow vulnerabilityA security flaw has been discovered in Tenda i3 1.0.0.6(2204). This vulnerability affects the function formWifiMacFilterSet of the file /goform/WifiM…EPSS 1.0%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%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%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%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%9.5CVE-2026-88772Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer VulnerabilityVulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 F…KEV

Source: NIST National Vulnerability Database (record CVE-2026-3803), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.