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Vulnerability record · CVE-2026-4043 · published 12 March 2026

CVE-2026-4043: Tenda i12 firmware memory buffer overflow vulnerability

Tenda · I12 Firmware

A security vulnerability has been detected in Tenda i12 1.0.0.6(2204). The impacted element is the function formwrlSSIDget of the file /goform/wifiSSIDget. Such manipulation of the argument index leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed publicly and may be used.

7.4 CVSS 4.0 High EPSS 0.99% · top 39.1% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow
7.4CVSS 4.0 base score, v2 9.0
0.99%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 security vulnerability has been detected in Tenda i12 1.0.0.6(2204). The impacted element is the function formwrlSSIDget of the file /goform/wifiSSIDget. Such manipulation of the argument index leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed publicly and may 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/Jimi-Lab/cve/issues/3 ExploitIssue TrackingThird Party Advisory
https://vuldb.com/?ctiid.350655 Permissions RequiredVDB Entry
https://vuldb.com/?id.350655 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.769464 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.

9.8CVE-2025-25678Tenda i12 firmware classic buffer overflow vulnerabilityTenda i12 V1.0.0.10(3805) was discovered to contain a buffer overflow via the funcpara1 parameter in the formSetCfm function.EPSS 0.45%9.8CVE-2025-25676Tenda i12 firmware classic buffer overflow vulnerabilityTenda i12 V1.0.0.10(3805) was discovered to contain a buffer overflow via the list parameter in the formwrlSSIDset function.EPSS 0.45%8.0CVE-2025-25679Tenda i12 firmware stack-based buffer overflow vulnerabilityTenda i12 V1.0.0.10(3805) was discovered to contain a buffer overflow via the index parameter in the formWifiMacFilterSet function.EPSS 0.27%7.5CVE-2025-29149Tenda i12 firmware stack-based buffer overflow vulnerabilityTenda i12 V1.0.0.10(3805) was discovered to contain a buffer overflow via the ping1 parameter in the formSetAutoPing function.EPSS 0.48%7.4CVE-2026-5609Tenda i12 firmware memory buffer overflow vulnerabilityA flaw has been found in Tenda i12 1.0.0.11(3862). Affected by this vulnerability is the function formwrlSSIDset of the file /goform/wifiSSIDset of t…EPSS 1.0%7.4CVE-2026-4042Tenda i12 firmware memory buffer overflow vulnerabilityA weakness has been identified in Tenda i12 1.0.0.6(2204). The affected element is the function formWifiMacFilterGet of the file /goform/WifiMacFilte…EPSS 1.0%7.4CVE-2026-4041Tenda i12 firmware memory buffer overflow vulnerabilityA security flaw has been discovered in Tenda i12 1.0.0.6(2204). Impacted is the function vos_strcpy of the file /goform/exeCommand. The manipulation …EPSS 0.99%5.5CVE-2026-5849Tenda i12 firmware path traversal vulnerabilityA vulnerability was determined in Tenda i12 1.0.0.11(3862). The impacted element is an unknown function of the component HTTP Handler. Executing a ma…EPSS 0.78%

Source: NIST National Vulnerability Database (record CVE-2026-4043), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.