QNAP Qsync Central up to 5.0.0.0 null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in QNAP Qsync Central. This issue affects some unknown processing. The manipulation leads to null pointer dereference. This vulnerability is uniquely identified as CVE-2025-44011. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in QNAP Qsync Central and classified as problematic. This issue affects an unknown functionality. 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 Qsync Central. 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: Qsync Central 5.0.0.1 ( 2025/07/09 ) and later

The weakness was disclosed by coral as qsa-25-34. The advisory is shared at qnap.com. The identification of this vulnerability is CVE-2025-44011 since 04/21/2025. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available.

Upgrading to version 5.0.0.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-32357). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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: Qsync Central 5.0.0.1

Timelineinfo

04/21/2025 CVE reserved
10/03/2025 +165 days Advisory disclosed
10/03/2025 +0 days VulDB entry created
10/09/2025 +6 days VulDB entry last update

Sourcesinfo

Vendor: qnap.com

Advisory: qsa-25-34
Researcher: coral
Status: Confirmed

CVE: CVE-2025-44011 (🔒)
GCVE (CVE): GCVE-0-2025-44011
GCVE (VulDB): GCVE-100-326957
EUVD: 🔒

Entryinfo

Created: 10/03/2025 21:18
Updated: 10/09/2025 05:47
Changes: 10/03/2025 21:18 (68), 10/04/2025 12:34 (1), 10/09/2025 05:47 (11)
Complete: 🔍
Cache ID: 216::103

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