Vulnerability · Published Mar 18, 2026 · Assigned by mitre

CVE-2026-30704

Critical 9.1

In plain English

A critical-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).

Severity (CVSS 3.1)9.1Critical

Exploit odds (30 days)0.3%top 74.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

Weakness: CWE-912 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

References

https://www.made-in-china.com/showroom/yeapook/#:~:text=Established%20in%202015.%2CDistrict%2C%20Shenzhen%2C%20Guangdong%2C%20China
https://mstreet97.github.io/security-research/iot/vulnerability-disclosure/cybersecurity/cve/2026/02/18/From-Blackbox-to-Whitebox-Multiple-CVEs-in-a-Consumer-WiFi-Extender.html