RCE in N/a

CVE-2026-30703

A command injection vulnerability exists in the web management interface of the WiFi Extender WDR201A (HW V2.1, FW LFMZX28040922V1.02). The adm.cgi endpoint improperly sanitizes user-supplied input provided to a command-related parameter in the sysCMD functionality.

Vulnerability class: Command Injection (OS Command Injection)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.020 (79.8th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-30703: rose from 0.010 to 0.020.

EPSS over last 30 days · oldest: 0.010 · newest: 0.020 · change: +0.009

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-30703?
CVE-2026-30703 is a critical-severity vulnerability in N/a, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-03-18.
How severe is CVE-2026-30703?
Critical severity. CVSS v3 base score is 9.8 out of 10.