← Vulnerability feed

Vulnerability record · CVE-2024-21899 · published 8 March 2024

CVE-2024-21899: Qnap qts improper authentication vulnerability

Qnap · Qts

An improper authentication 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 QTS 4.5.4.2627 build 20231225 and later QuTS hero h5.1.3.2578 build 20231110 and later QuTS hero h4.5.4.2626 build 20231225 and later QuTScloud c5.1.5.2651 and later

9.8 CVSS 3.1 Critical EPSS 24% · top 2.2% CWE-287 · Improper authentication
9.8CVSS 3.1 base score
24%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

An improper authentication 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 QTS 4.5.4.2627 build 20231225 and later QuTS hero h5.1.3.2578 build 20231110 and later QuTS hero h4.5.4.2626 build 20231225 and later QuTScloud c5.1.5.2651 and later

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.qnap.com/en/security-advisory/qsa-24-09 Vendor Advisory
https://www.qnap.com/en/security-advisory/qsa-24-09 Vendor Advisory

Track CVE-2024-21899 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2020-2509QNAP QTS and QuTS hero command injectionQTS and QuTS hero contain a command injection flaw that lets an attacker run arbitrary commands within a compromised application. It is remotely reac…KEVEPSS 34%analysed9.8CVE-2018-19949QNAP QTS File Station command injection allows remote code executionQNAP QTS contains a command injection flaw in File Station that lets remote attackers run arbitrary commands on the NAS. It is remotely reachable wit…KEVEPSS 28%analysed9.8CVE-2019-7193QNAP QTS improper input validation allows remote code injectionQNAP QTS contains an improper input validation flaw that lets remote attackers inject arbitrary code into the system. It is remotely reachable withou…KEVEPSS 14%analysed9.8CVE-2014-7169GNU Bash environment variable function parsing command injection (Shellshock variant)GNU Bash through 4.3 bash43-025 processes trailing strings after malformed function definitions in environment variable values, allowing command inje…KEVEPSS 100%analysed9.8CVE-2014-6271GNU Bash environment variable command injection (ShellShock)GNU Bash through 4.3 processes trailing strings after function definitions in environment variable values, allowing injected commands to run when Bas…KEVEPSS 100%analysed6.1CVE-2018-19953QNAP QTS File Station cross-site scripting flawQNAP QTS contains a cross-site scripting vulnerability in File Station that lets remote attackers inject malicious code. It matters because the flaw …KEVEPSS 29%analysed5.4CVE-2018-19943QNAP QTS File Station cross-site scriptingQNAP QTS contains a cross-site scripting flaw in File Station that lets a remote attacker inject malicious code. It matters because the vendor has fi…KEVEPSS 21%analysed10.0CVE-2024-32766Qnap qts command injection vulnerabilityAn OS command injection vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow…EPSS 2.3%

Source: NIST National Vulnerability Database (record CVE-2024-21899), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.