CVE-2026-24723

Analyzed Analyzed - Analysis Complete

NULL Pointer Dereference in QNAP File Station DoS Vulnerability

Publication date: 2026-10-15

Last updated on: 2026-10-16

Assigner: QNAP Systems, Inc.

Description

A NULL pointer dereference vulnerability has been reported to affect File Station 5. If a remote attacker gains a user 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 5.5.6.5243 and later

CVSS Scores

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Meta Information

Published

2026-10-15

Last Modified

2026-10-16

Generated

2026-10-19

AI Q&A

2026-10-15

EPSS Evaluated

2026-10-18

NVD

CVE-2026-24723

EUVD

EUVD-2026-101878

Affected Vendors & Products

Vendor	Product	Version / Range
qnap	file_station	to 5.5.6.5243 (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

Executive Summary

This is a NULL pointer dereference vulnerability in File Station 5. If an attacker gains access to a user account, they can exploit it to cause a denial-of-service (DoS) attack by crashing the application or system.

Detection Guidance

Detection requires checking the installed version of File Station 5. Compare your version against 5.5.6.5243 or later. If your version is older, the vulnerability may be present.

Impact Analysis

An attacker could disrupt services by causing a crash, leading to downtime for File Station 5. This could affect file access and system availability for users.

Compliance Impact

This vulnerability allows a remote attacker with a user account to cause a denial-of-service condition via a NULL pointer dereference in File Station 5. Such attacks could disrupt access to critical data, potentially violating availability requirements in GDPR and HIPAA. However, the provided CVE details do not explicitly link this issue to compliance impacts or specific regulatory violations.

Mitigation Strategies

Update File Station 5 to version 5.5.6.5243 or later immediately to patch the vulnerability. Ensure no unauthorized users have access to accounts that could exploit this issue.

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