How severe is CVE-2026-3811?

CVE-2026-3811 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-2026-3811 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3811?

CVE-2026-3811 affects Tenda Fh1202 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-3811?

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-2026-3811 have an EU (EUVD) identifier?

Yes. CVE-2026-3811 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10312.

When was CVE-2026-3811 published?

CVE-2026-3811 was published on 2026-03-09 and last updated on 2026-06-17.

CVE-2026-3811

CVE-2026-3811 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% (47th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10312
Weakness: CWE-119
Affected product: Tenda Fh1202 Firmware
Published: 2026-03-09
Last modified: 2026-06-17

Description

A vulnerability was found in Tenda FH1202 1.2.0.14(408). This impacts the function fromP2pListFilter of the file /goform/P2pListFilter. The manipulation of the argument page results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been made public and could be used.

Frequently asked questions

What is CVE-2026-3811?: A vulnerability was found in Tenda FH1202 1.2.0.14(408). This impacts the function fromP2pListFilter of the file /goform/P2pListFilter. The manipulation of the argument page results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been made public and could be used.
How severe is CVE-2026-3811?: CVE-2026-3811 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-2026-3811 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3811?: CVE-2026-3811 affects Tenda Fh1202 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3811?: 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-2026-3811 have an EU (EUVD) identifier?: Yes. CVE-2026-3811 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10312.
When was CVE-2026-3811 published?: CVE-2026-3811 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\(408\):*:*:*:*:*:*:*

More vulnerabilities in Tenda Fh1202 Firmware

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…
CVE-2024-30587 — Critical (CVSS 9.8): Tenda FH1202 v1.2.0.14(408) has a stack overflow vulnerability in the urls parameter of the saveParentControlInfo…
CVE-2024-30584 — Critical (CVSS 9.8): Tenda FH1202 v1.2.0.14(408) has a stack overflow vulnerability in the security parameter of the formWifiBasicSet…
CVE-2024-30596 — Critical (CVSS 9.8): Tenda FH1202 v1.2.0.14(408) has a stack overflow vulnerability in the deviceId parameter of the formSetDeviceName…
CVE-2024-30593 — Critical (CVSS 9.8): Tenda FH1202 v1.2.0.14(408) has a stack overflow vulnerability located in the deviceName parameter of the…
CVE-2024-30595 — Critical (CVSS 9.8): Tenda FH1202 v1.2.0.14(408) has a stack overflow vulnerability in the deviceId parameter of the addWifiMacFilter…

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