How severe is CVE-2026-30704?

CVE-2026-30704 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2026-30704 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-30704?

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

Does CVE-2026-30704 have an EU (EUVD) identifier?

Yes. CVE-2026-30704 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12878.

When was CVE-2026-30704 published?

CVE-2026-30704 was published on 2026-03-18 and last updated on 2026-06-17.

CVE-2026-30704

CVE-2026-30704 is a critical-severity vulnerability with a CVSS 3.x base score of 9.1. 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-912.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-12878
Weakness: CWE-912
Published: 2026-03-18
Last modified: 2026-06-17

Description

The WiFi Extender WDR201A (HW V2.1, FW LFMZX28040922V1.02) exposes an unprotected UART interface through accessible hardware pads on the PCB

Frequently asked questions

What is CVE-2026-30704?: The WiFi Extender WDR201A (HW V2.1, FW LFMZX28040922V1.02) exposes an unprotected UART interface through accessible hardware pads on the PCB
How severe is CVE-2026-30704?: CVE-2026-30704 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2026-30704 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-30704?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-30704 have an EU (EUVD) identifier?: Yes. CVE-2026-30704 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12878.
When was CVE-2026-30704 published?: CVE-2026-30704 was published on 2026-03-18 and last updated on 2026-06-17.

References

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