CVE-2025-54163

Analyzed Analyzed - Analysis Complete

NULL Pointer Dereference in File Station 5 Enables DoS Attack

Publication date: 2026-02-11

Last updated on: 2026-02-12

Assigner: QNAP Systems, Inc.

Description

A NULL pointer dereference vulnerability has been reported to affect File Station 5. If a remote attacker gains an administrator account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.5166 and later

CVSS Scores

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Meta Information

Published

2026-02-11

Last Modified

2026-02-12

Generated

2026-07-06

AI Q&A

2026-02-11

EPSS Evaluated

2026-07-05

NVD

CVE-2025-54163

Affected Vendors & Products

Vendor	Product	Version / Range
qnap	file_station	From 5.5.6.4691 (inc) to 5.5.6.5190 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-476	The product dereferences a pointer that it expects to be valid but is NULL.

Attack-Flow Graph

Compliance Impact

I don't know

Detection Guidance

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Executive Summary

This vulnerability is a NULL pointer dereference issue affecting File Station 5. It occurs when a remote attacker who has obtained an administrator account exploits this flaw to cause the application to crash or become unavailable.

Essentially, the attacker can trigger a denial-of-service (DoS) attack by exploiting this vulnerability.

Impact Analysis

If exploited, this vulnerability allows an attacker with administrator privileges to launch a denial-of-service (DoS) attack against File Station 5, causing the service to crash or become unavailable.

This can disrupt normal operations and potentially impact availability of the affected system.

Mitigation Strategies

To mitigate this vulnerability, ensure that your File Station 5 software is updated to version 5.5.6.5166 or later, where the issue has been fixed.

Additionally, restrict administrator account access to trusted users only, as exploitation requires an attacker to have administrator privileges.

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