CVE-2026-30703 | A command injection vulnerability exists in the web manageme… | CVSS 9.8 CRITICAL

Description

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.

Metadata

CVE ID: CVE-2026-30703
State: PUBLISHED
Assigner: mitre
Reserved: 2026-03-04 00:00 UTC
Published: 2026-03-18 00:00 UTC
Last updated: 2026-03-23 15:56 UTC
Primary CWE: CWE-78
CWE-78 Improper Neutralization of Special Elements used in a…
Vendor / Product: n/a / n/a
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
n/a	n/a	—	n/a

Weakness (CWE)

CWE	Source	Description
—	cna	n/a
CWE-78	adp	CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	adp	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (2)