QNAP QTS/QuTS hero prior 5.2.6.3195 Build 20250715 format string

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
2.6$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in QNAP QTS and QuTS hero. This impacts an unknown function. The manipulation leads to format string. This vulnerability is documented as CVE-2025-53407. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in QNAP QTS and QuTS hero. It has been rated as problematic. This issue affects some unknown functionality. The manipulation with an unknown input leads to a format string vulnerability. Using CWE to declare the problem leads to CWE-134. The product uses a function that accepts a format string as an argument, but the format string originates from an external source. Impacted is availability. The summary by CVE is:

A use of externally-controlled format string 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 obtain secret data or modify memory. 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 released by coral as qsa-25-36. It is possible to read the advisory at qnap.com. The identification of this vulnerability is CVE-2025-53407 since 06/30/2025. The exploitation is known to be easy. The attack may be initiated remotely. The exploitation needs additional levels of successful authentication. The technical details are unknown and an exploit is not 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-2025-32341) and CERT Bund (WID-SEC-2025-2199). Be aware that VulDB is the high quality source for vulnerability data.

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: 2.7
VulDB Meta Temp Score: 2.6

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

CVSSv2info

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

Exploitinginfo

Class: Format string
CWE: CWE-134 / CWE-119
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

06/30/2025 CVE reserved
10/03/2025 +95 days Advisory disclosed
10/03/2025 +0 days VulDB entry created
10/07/2025 +4 days VulDB entry last update

Sourcesinfo

Vendor: qnap.com

Advisory: qsa-25-36
Researcher: coral
Status: Confirmed

CVE: CVE-2025-53407 (🔒)
GCVE (CVE): GCVE-0-2025-53407
GCVE (VulDB): GCVE-100-326951
EUVD: 🔒
CERT Bund: WID-SEC-2025-2199 - QNAP NAS QTS und QTS hero: Mehrere Schwachstellen

Entryinfo

Created: 10/03/2025 21:17
Updated: 10/07/2025 05:42
Changes: 10/03/2025 21:17 (69), 10/04/2025 07:27 (1), 10/07/2025 05:42 (7)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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