CVE-2026-4840

| EUVD-2026-16108 HIGH
2026-03-26 VulDB
7.4
CVSS 4.0
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CVSS Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

4
PoC Detected
Mar 30, 2026 - 13:26 vuln.today
Public exploit code
Analysis Generated
Mar 26, 2026 - 04:30 vuln.today
EUVD ID Assigned
Mar 26, 2026 - 04:30 euvd
EUVD-2026-16108
CVE Published
Mar 26, 2026 - 04:05 nvd
HIGH 7.4

Description

A security flaw has been discovered in Netcore Power 15AX up to 3.0.0.6938. Affected by this issue is the function setTools of the file /bin/netis.cgi of the component Diagnostic Tool Interface. Performing a manipulation of the argument IpAddr results in os command injection. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Analysis

A critical OS command injection vulnerability exists in the Diagnostic Tool Interface of Netcore Power 15AX routers up to firmware version 3.0.0.6938. An authenticated attacker with low-level privileges can remotely execute arbitrary operating system commands by manipulating the IpAddr parameter in the setTools function of /bin/netis.cgi. …

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Remediation

Within 24 hours: Identify and inventory all Netcore Power 15AX routers in production (firmware ≤3.0.0.6938) and restrict network access to the /bin/netis.cgi endpoint. Within 7 days: Implement WAF rules to block suspicious IpAddr parameters and disable the Diagnostic Tool Interface if operationally feasible. …

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Priority Score

57
Low Medium High Critical
KEV: 0
EPSS: +0.2
CVSS: +37
POC: +20

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CVE-2026-4840 vulnerability details – vuln.today

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