CVE-2026-3801

Tenda I3 Firmware buffer overflow

8.8 HIGHPublic exploitEPSS 1.01%

Published9 Mar 2026

Description

A vulnerability was found in Tenda i3 1.0.0.6(2204). Affected by this vulnerability is the function formSetAutoPing of the file /goform/setAutoPing. Performing a manipulation of the argument ping1/ping2 results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been made public and could be used.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredLow

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Tenda I3 Firmware1.0.0.6\(2204\)

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

https://github.com/Svigo-o/Tenda_vul/tree/main/tenda-i3-setautoping-ping1-buffer-overflowExploitThird Party Advisory
https://github.com/Svigo-o/Tenda_vul/tree/main/tenda-i3-setautoping-ping2-buffer-overflowExploitThird Party Advisory
https://vuldb.com/?ctiid.349768Permissions RequiredVDB Entry
https://vuldb.com/?id.349768Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.768980Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.768982Third Party AdvisoryVDB Entry
https://www.tenda.com.cn/Product

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2026-3801 being actively exploited?

CVE-2026-3801 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.01%.

How severe is CVE-2026-3801?

CVE-2026-3801 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 1.01% probability of exploitation.

Which products are affected by CVE-2026-3801?

Affected products include Tenda I3 Firmware.

How do I fix CVE-2026-3801?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-3801 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation works Book a demo

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.