QNAP Qsync Central up to 5.0.0.1 resource consumption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in QNAP Qsync Central. It has been rated as problematic. The impacted element is an unknown function. Performing a manipulation results in resource consumption. This vulnerability is cataloged as CVE-2025-52867. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in QNAP Qsync Central. It has been classified as critical. This affects an unknown function. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. The summary by CVE is:

An uncontrolled resource consumption 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 5.0.0.2 ( 2025/07/31 ) and later

The weakness was shared by Searat and Izut as qsa-25-35. The advisory is shared at qnap.com. This vulnerability is uniquely identified as CVE-2025-52867 since 06/20/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 5.0.0.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-32339). 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: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / 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 5.0.0.2

Timelineinfo

06/20/2025 CVE reserved
10/03/2025 +105 days Advisory disclosed
10/03/2025 +0 days VulDB entry created
10/04/2025 +1 days VulDB entry last update

Sourcesinfo

Vendor: qnap.com

Advisory: qsa-25-35
Researcher: Searat, Izut
Status: Confirmed

CVE: CVE-2025-52867 (🔒)
GCVE (CVE): GCVE-0-2025-52867
GCVE (VulDB): GCVE-100-326949
EUVD: 🔒

Entryinfo

Created: 10/03/2025 21:17
Updated: 10/04/2025 11:14
Changes: 10/03/2025 21:17 (68), 10/04/2025 11:14 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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