Is this vulnerability remotely exploitable?

Yes. Where the file import feature is exposed over a network (for example, via a web interface or API), a remote attacker who can access that feature may exploit the vulnerability, subject to any authentication requirements.

What level of access does an attacker need to exploit this?

The attacker must be able to use the file import mechanism. In some deployments this might require authenticated but low-privileged access; in others, if the feature is exposed more broadly, it could be reachable by unauthenticated users.

What is the safest general fix pattern?

The safest approach is to strictly control where and how files are written: use fixed storage directories, generate server-side filenames, normalize and validate paths, and ensure the application process has no write permission to code, configuration, or system directories.

Severity:

CRITICAL RISK

(9.8)

Arbitrary File Overwrite (CWE-73) in MaruNuri LLC File Import Functionality

CVE-2026-30281

Published:

Mar 31, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Arbitrary File Overwrite

CWE:

CWE-73

Impact:

Remote Code Execution and Information Disclosure

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Arbitrary File Overwrite

CWE:

CWE-73

Impact:

Remote Code Execution and Information Disclosure

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Arbitrary File Overwrite (CWE-73) in MaruNuri LLC File Import Functionality

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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