QNAP QTS/QuTS hero prior 5.2.6.3195 Build 20250715 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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3.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in QNAP QTS and QuTS hero. This affects an unknown part. Executing a manipulation can lead to null pointer dereference. The identification of this vulnerability is CVE-2025-52858. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in QNAP QTS and QuTS hero. This vulnerability affects some unknown functionality. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. CVE summarizes:

A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following versions: QTS 5.2.6.3195 build 20250715 and later QuTS hero h5.2.6.3195 build 20250715 and later

The weakness was shared by coral as qsa-25-36. The advisory is shared for download at qnap.com. This vulnerability was named CVE-2025-52858 since 06/20/2025. The exploitation appears to be easy. The attack can be initiated remotely. Additional levels of successful authentication are needed for exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 5.2.6.3195 Build 20250715 eliminates this vulnerability.

The vulnerability is also documented in the databases at EUVD (EUVD-2025-32334) and CERT Bund (WID-SEC-2025-2199). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • QNAP NAS

Productinfo

Type

Vendor

Name

Version

License

Website

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: 3.8
VulDB Meta Temp Score: 3.7

VulDB Base Score: 2.7
VulDB Temp Score: 2.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 4.9
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: QTS/QuTS hero 5.2.6.3195 Build 20250715

Timelineinfo

06/20/2025 CVE reserved
10/03/2025 +105 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-25-36
Researcher: coral
Status: Confirmed

CVE: CVE-2025-52858 (🔒)
GCVE (CVE): GCVE-0-2025-52858
GCVE (VulDB): GCVE-100-326944
EUVD: 🔒
CERT Bund: WID-SEC-2025-2199 - QNAP NAS QTS und QTS hero: Mehrere Schwachstellen

Entryinfo

Created: 10/03/2025 21:13
Updated: 10/09/2025 07:53
Changes: 10/03/2025 21:13 (69), 10/04/2025 11:14 (1), 10/06/2025 23:02 (7), 10/09/2025 07:53 (11)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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