Detections
Analytics

Qnap QTS and QuTS hero Use of Externally-Controlled Format String (CVE-2025-53407)

medium Tenable OT Security Plugin ID 504989

Synopsis

The remote OT asset is affected by a vulnerability.

Description

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

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Refer to the vendor advisory.

See Also

https://www.qnap.com/en/security-advisory/qsa-25-36

Plugin Details

Severity: Medium

ID: 504989

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 1/16/2026

Updated: 1/16/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Vulnerability Information

CPE: cpe:/o:qnap:qts:5.2, cpe:/o:qnap:quts_hero:h5.2

Required KB Items: Tenable.ot/Qnap

Exploit Ease: No known exploits are available

Patch Publication Date: 10/3/2025

Vulnerability Publication Date: 10/3/2025

Reference Information

CVE: CVE-2025-53407

CWE: 134