How severe is CVE-2026-3801?

CVE-2026-3801 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-3801 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3801?

CVE-2026-3801 affects Tenda I3 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-3801?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-3801 have an EU (EUVD) identifier?

Yes. CVE-2026-3801 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10292.

When was CVE-2026-3801 published?

CVE-2026-3801 was published on 2026-03-09 and last updated on 2026-06-17.

CVE-2026-3801

CVE-2026-3801 is a high-severity vulnerability in Tenda I3 Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
CVSS v4: 7.4
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10292
Weakness: CWE-119
Affected product: Tenda I3 Firmware
Published: 2026-03-09
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-3801?: 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.
How severe is CVE-2026-3801?: CVE-2026-3801 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-3801 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3801?: CVE-2026-3801 affects Tenda I3 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3801?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-3801 have an EU (EUVD) identifier?: Yes. CVE-2026-3801 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10292.
When was CVE-2026-3801 published?: CVE-2026-3801 was published on 2026-03-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:i3_firmware:1.0.0.6\(2204\):*:*:*:*:*:*:*

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