QNAP File Station up to 5.5.6.4933 User Account null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability has been found in QNAP File Station and classified as problematic. Impacted is an unknown function of the component User Account Handler. The manipulation leads to null pointer dereference. This vulnerability is listed as CVE-2025-52865. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in QNAP File Station. It has been rated as problematic. This issue affects an unknown part of the component User Account Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. The summary by CVE is:

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 5.5.6.5018 and later

The weakness was presented by coral as qsa-25-38. It is possible to read the advisory at qnap.com. The identification of this vulnerability is CVE-2025-52865 since 06/20/2025. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 5.5.6.5018 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: File Station 5.5.6.5018

Timelineinfo

06/20/2025 CVE reserved
11/07/2025 +140 days Advisory disclosed
11/07/2025 +0 days VulDB entry created
11/15/2025 +8 days VulDB entry last update

Sourcesinfo

Vendor: qnap.com

Advisory: qsa-25-38
Researcher: coral
Status: Confirmed

CVE: CVE-2025-52865 (🔒)
GCVE (CVE): GCVE-0-2025-52865
GCVE (VulDB): GCVE-100-331523

Entryinfo

Created: 11/07/2025 17:24
Updated: 11/15/2025 08:52
Changes: 11/07/2025 17:24 (70), 11/07/2025 17:33 (2), 11/09/2025 00:18 (1), 11/15/2025 08:52 (11)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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