EUVD-2026-12876

| CVE-2026-30703 CRITICAL
2026-03-18 mitre
9.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 18, 2026 - 17:30 vuln.today
EUVD ID Assigned
Mar 18, 2026 - 17:30 euvd
EUVD-2026-12876
CVE Published
Mar 18, 2026 - 00:00 nvd
CRITICAL 9.8

Tags

Command Injection

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.

Analysis

Unauthenticated remote code execution in WiFi Extender WDR201A (HW V2.1, FW LFMZX28040922V1.02) via command injection in the adm.cgi sysCMD parameter allows attackers to achieve complete system compromise without authentication or user interaction. The vulnerability stems from insufficient input validation on the web management interface and currently lacks a vendor patch.

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Remediation

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Validate that input sanitization is in place for all user-controlled parameters.

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Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +49
POC: 0

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EUVD-2026-12876 vulnerability details – vuln.today
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