How severe is CVE-2026-5684?

CVE-2026-5684 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-5684 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5684?

CVE-2026-5684 affects Tenda Cx12l Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-5684?

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-2026-5684 have an EU (EUVD) identifier?

Yes. CVE-2026-5684 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19514.

When was CVE-2026-5684 published?

CVE-2026-5684 was published on 2026-04-06 and last updated on 2026-06-17.

CVE-2026-5684

CVE-2026-5684 is a high-severity vulnerability in Tenda Cx12l Firmware with a CVSS 3.x base score of 8.0. 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 8.0)
CVSS v2: 7.7
CVSS v4: 7.3
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-19514
Weakness: CWE-119
Affected product: Tenda Cx12l Firmware
Published: 2026-04-06
Last modified: 2026-06-17

Description

A vulnerability was determined in Tenda CX12L 16.03.53.12. Affected by this issue is the function fromwebExcptypemanFilter of the file /goform/webExcptypemanFilter. Executing a manipulation of the argument page can lead to stack-based buffer overflow. The attack requires access to the local network. The exploit has been publicly disclosed and may be utilized.

Frequently asked questions

What is CVE-2026-5684?: A vulnerability was determined in Tenda CX12L 16.03.53.12. Affected by this issue is the function fromwebExcptypemanFilter of the file /goform/webExcptypemanFilter. Executing a manipulation of the argument page can lead to stack-based buffer overflow. The attack requires access to the local network. The exploit has been publicly disclosed and may be utilized.
How severe is CVE-2026-5684?: CVE-2026-5684 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-5684 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5684?: CVE-2026-5684 affects Tenda Cx12l Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-5684?: 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-2026-5684 have an EU (EUVD) identifier?: Yes. CVE-2026-5684 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19514.
When was CVE-2026-5684 published?: CVE-2026-5684 was published on 2026-04-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:cx12l_firmware:16.03.53.12:*:*:*:*:*:*:*

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