CVE-2024-21899 (GCVE-0-2024-21899)

Vulnerability from cvelistv5 – Published: 2024-03-08 16:17 – Updated: 2024-08-01 22:35
VLAI Shadowserver KEVIntel
Title
QTS, QuTS hero, QuTScloud
Summary
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
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
QNAP Systems Inc. QTS Affected: 5.1.x , < 5.1.3.2578 build 20231110 (custom)
Affected: 4.5.x , < 4.5.4.2627 build 20231225 (custom)
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QNAP Systems Inc. QuTS hero Affected: h5.1.x , < h5.1.3.2578 build 20231110 (custom)
Affected: h4.5.x , < h4.5.4.2626 build 20231225 (custom)
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QNAP Systems Inc. QuTScloud Affected: c5.x.x , < c5.1.5.2651 (custom)
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qnap qts Affected: 5.1.0 , < 5.1.3.2578 build 20231110 (custom)
    cpe:2.3:o:qnap:qts:5.1.0:*:*:*:*:*:*:*
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qnap qts Affected: 4.5.0 , < 4.5.4.2627 build 20231225 (custom)
    cpe:2.3:a:qnap:qts:4.5.0:*:*:*:*:*:*:*
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qnap quts_hero Affected: h5.1.0 , < h5.1.3.2578 build 20231110 (custom)
    cpe:2.3:o:qnap:quts_hero:h5.1.0:*:*:*:*:*:*:*
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qnap quts_hero Affected: h4.5.0 , < h4.5.4.2626 build 20231225 (custom)
    cpe:2.3:o:qnap:quts_hero:h4.5.0:*:*:*:*:*:*:*
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qnap qutscloud Affected: c5.0.0 , < c5.1.5.2651 (custom)
    cpe:2.3:o:qnap:qutscloud:c5.0.0:*:*:*:*:*:*:*
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Credits
ZDI-CAN-22493/22494 : DEVCORE
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2024-21899

Status: Confirmed

Status Updated: 2024-04-20 00:00 UTC

Exploited: Yes


Characteristics
Severity: 98.0

Timestamps
First Seen: 2024-03-18
Asserted: 2024-03-18
Last Seen: 2024-04-20

Scope
Asset Exposure: ['internet-facing']
Notes: Affected: QNAP / QNAP QTS and QuTS Hero | Class: nas | Severity: Critical (CVSS 9.8) | IoT: yes | In CISA KEV: no | Honeypot connections on 2024-04-20: 199

Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver


Details
1D 10
Iot yes
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class nas
7D Avg 1
Vendor QNAP
30D Avg 1
90D Avg 0
Product QNAP QTS and QuTS Hero
Cisa Kev no
Connections 199
Observation Date 2024-04-20
Vulnerability Class CVSS
Vulnerability Score 9.8
Vulnerability Severity Critical

References

Created: 2026-06-30 09:42 UTC | Updated: 2026-06-30 12:40 UTC
KEVIntel
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2024-21899

Status: Confirmed

Status Updated: 2025-04-27 00:00 UTC

Exploited: Yes


Timestamps
First Seen: 2025-04-27
Asserted: 2025-04-27

Scope
Notes: KEVIntel entry: QTS, QuTS hero, QuTScloud | Affected: QNAP Systems Inc. / QTS, QuTS hero, QuTScloud | CVSS: 9.8 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: True

Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel


Details
Feed KEVIntel (kevintel.com)
Title QTS, QuTS hero, QuTScloud
Vendor QNAP Systems Inc.
Product QTS, QuTS hero, QuTScloud
Added Date 2025-04-27T00:00:00.000Z
Cvss Score 9.8
Epss Score None
Cvss Severity CRITICAL
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True

References

Created: 2026-06-23 14:04 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website

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    "redhat_vex": {
      "current_release_date": "2025-05-28T22:16:37+00:00",
      "cve": "CVE-2024-21899",
      "id": "CVE-2024-21899",
      "initial_release_date": "2024-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
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      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-21899.json",
      "version": "3"
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      "cveMetadata": "{\"cveId\": \"CVE-2024-21899\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-08-01T22:35:34.557Z\", \"dateReserved\": \"2024-01-03T02:31:17.843Z\", \"assignerOrgId\": \"2fd009eb-170a-4625-932b-17a53af1051f\", \"datePublished\": \"2024-03-08T16:17:25.243Z\", \"assignerShortName\": \"qnap\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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