How severe is CVE-2026-3807?

CVE-2026-3807 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-2026-3807 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3807?

CVE-2026-3807 affects Tenda Fh1202 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-3807?

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-2026-3807 have an EU (EUVD) identifier?

Yes. CVE-2026-3807 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10300.

When was CVE-2026-3807 published?

CVE-2026-3807 was published on 2026-03-09 and last updated on 2026-06-17.

CVE-2026-3807

CVE-2026-3807 is a high-severity vulnerability in Tenda Fh1202 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% (63rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10300
Weakness: CWE-119
Affected product: Tenda Fh1202 Firmware
Published: 2026-03-09
Last modified: 2026-06-17

Description

A security vulnerability has been detected in Tenda FH1202 1.2.0.14(408). Impacted is the function formWrlsafeset of the file /goform/AdvSetWrlsafeset. Such manipulation of the argument mit_ssid/mit_ssid_index leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.

Frequently asked questions

What is CVE-2026-3807?: A security vulnerability has been detected in Tenda FH1202 1.2.0.14(408). Impacted is the function formWrlsafeset of the file /goform/AdvSetWrlsafeset. Such manipulation of the argument mit_ssid/mit_ssid_index leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.
How severe is CVE-2026-3807?: CVE-2026-3807 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-2026-3807 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3807?: CVE-2026-3807 affects Tenda Fh1202 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3807?: 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-2026-3807 have an EU (EUVD) identifier?: Yes. CVE-2026-3807 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10300.
When was CVE-2026-3807 published?: CVE-2026-3807 was published on 2026-03-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:fh1202_firmware:1.2.0.14\(408\):*:*:*:*:*:*:*

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CVE-2024-30589 — Critical (CVSS 9.8): Tenda FH1202 v1.2.0.14(408) firmware has a stack overflow vulnerability in the entrys parameter of the fromAddressNat…
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