Detections
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Qnap QTS and QuTS hero Buffer Copy without Checking Size of Input (CVE-2025-48725)

low Tenable OT Security Plugin ID 505141

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains a user account, they can then exploit the vulnerability to modify memory or crash processes. We have already fixed the vulnerability in the following version: QuTS hero h5.3.2.3354 build 20251225 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-26-08

Plugin Details

Severity: Low

ID: 505141

File Name: tenable_ot_qnap_CVE-2025-48725.nasl

Version: 1.2

Type: remote

Family: Tenable.ot

Published: 2/12/2026

Updated: 2/13/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:C/A:C

CVSS Score Source: CVE-2025-48725

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Low

Base Score: 2.3

Threat Score: 0.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:qnap:quts_hero:-

Required KB Items: Tenable.ot/Qnap

Exploit Ease: No known exploits are available

Patch Publication Date: 2/11/2026

Vulnerability Publication Date: 2/11/2026

Reference Information

CVE: CVE-2025-48725

CWE: 120, 121