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Qnap QTS and QuTS hero Integer Overflow or Wraparound (CVE-2024-21905)

high Tenable OT Security Plugin ID 504998

Synopsis

The remote OT asset is affected by a vulnerability.

Description

An integer overflow or wraparound vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to compromise the security of the system via a network. We have already fixed the vulnerability in the following versions: QTS 5.1.3.2578 build 20231110 and later QuTS hero h5.1.3.2578 build 20231110 and later QuTScloud c5.1.5.2651 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-24-16

Plugin Details

Severity: High

ID: 504998

File Name: tenable_ot_qnap_CVE-2024-21905.nasl

Version: 1.2

Type: remote

Family: Tenable.ot

Published: 1/19/2026

Updated: 2/5/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.2

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

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

CVSS Score Source: CVE-2024-21905

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.1

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

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

Vulnerability Information

CPE: cpe:/o:qnap:qts, cpe:/o:qnap:quts_hero

Required KB Items: Tenable.ot/Qnap

Exploit Ease: No known exploits are available

Patch Publication Date: 4/26/2024

Vulnerability Publication Date: 4/26/2024

Reference Information

CVE: CVE-2024-21905

CWE: 190