CVE-2026-22899
Received Received - Intake
NULL Pointer Dereference in QNAP File Station DoS Vulnerability

Publication date: 2026-06-10

Last updated on: 2026-06-10

Assigner: QNAP Systems, Inc.

Description
A NULL pointer dereference vulnerability has been reported to affect File Station 6. 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 5.5.6.5208 and later
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Meta Information
Published
2026-06-10
Last Modified
2026-06-10
Generated
2026-06-10
AI Q&A
2026-06-10
EPSS Evaluated
N/A
NVD
CVE-2026-22899
EUVD
EUVD-2026-35973
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
qnap file_station From 5.5.6.5208 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-476 The product dereferences a pointer that it expects to be valid but is NULL.
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Executive Summary

This vulnerability is a NULL pointer dereference issue affecting File Station 6. It allows a remote attacker who has gained a user account to exploit the flaw and cause a denial-of-service (DoS) attack.

Impact Analysis

If exploited, this vulnerability can cause a denial-of-service (DoS) condition, potentially disrupting the availability of the affected File Station service.

Mitigation Strategies

To mitigate this vulnerability, you should upgrade File Station to version 5.5.6.5208 or later, where the issue has been fixed.

Additionally, since exploitation requires a remote attacker to have a user account, reviewing and restricting user account access can help reduce risk.

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