CVE-2020-2509 (GCVE-0-2020-2509)
Vulnerability from cvelistv5 – Published: 2021-04-17 03:50 – Updated: 2025-10-21 23:25Title
Command Injection Vulnerability in QTS and QuTS hero
Summary
A command injection vulnerability has been reported to affect QTS and QuTS hero. If exploited, this vulnerability allows attackers to execute arbitrary commands in a compromised application. We have already fixed this vulnerability in the following versions: QTS 4.5.2.1566 Build 20210202 and later QTS 4.5.1.1495 Build 20201123 and later QTS 4.3.6.1620 Build 20210322 and later QTS 4.3.4.1632 Build 20210324 and later QTS 4.3.3.1624 Build 20210416 and later QTS 4.2.6 Build 20210327 and later QuTS hero h4.5.1.1491 build 20201119 and later
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-06 20:45 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.qnap.com/en/security-advisory/qsa-21-05 | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| QNAP Systems Inc. | QTS |
Affected:
unspecified , < 4.5.2.1566 Build 20210202
(custom)
Affected: unspecified , < 4.5.1.1495 Build 20201123 (custom) Affected: unspecified , < 4.3.6.1620 Build 20210322 (custom) Affected: unspecified , < 4.3.4.1632 Build 20210324 (custom) Affected: unspecified , < 4.3.3.1624 Build 20210416 (custom) Affected: unspecified , < 4.2.6 Build 20210327 (custom) |
guessed | |
| QNAP Systems Inc. | QuTS hero |
Affected:
unspecified , < h4.5.1.1491 build 20201119
(custom)
|
guessed |
Date Public
2021-04-16 00:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 303492ee-578a-4997-a22b-3d68111c358d
Exploited: Yes
Timestamps
First Seen: 2022-04-11
Asserted: 2022-04-11
Scope
Notes: KEV entry: QNAP Network-Attached Storage (NAS) Command Injection Vulnerability | Affected: QNAP / QNAP Network-Attached Storage (NAS) | Description: QNAP NAS devices contain a command injection vulnerability which could allow attackers to perform remote code execution. | Required action: Apply updates per vendor instructions. | Due date: 2022-05-02 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2020-2509
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-77 CWE-78 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | QNAP Network-Attached Storage (NAS) |
| Due Date | 2022-05-02 |
| Date Added | 2022-04-11 |
| Vendorproject | QNAP |
| Vulnerabilityname | QNAP Network-Attached Storage (NAS) Command Injection Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 12:27 UTC
| Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: f0a6b962-3136-4394-9ec9-2210453f1e6a
Exploited: Yes
Timestamps
First Seen: 2022-04-11
Asserted: 2022-04-11
Scope
Notes: KEVIntel entry: Command Injection Vulnerability in QTS and QuTS hero | Affected: QNAP Systems Inc. / QTS, QuTS hero | CVSS: 9.8 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | Command Injection Vulnerability in QTS and QuTS hero |
| Vendor | QNAP Systems Inc. |
| Product | QTS, QuTS hero |
| Added Date | 2022-04-11T00:00:00.000Z |
| 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 | False |
References
Created: 2026-06-23 14:05 UTC
| Updated: 2026-07-10 06:14 UTC
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"value": "A command injection vulnerability has been reported to affect QTS and QuTS hero. If exploited, this vulnerability allows attackers to execute arbitrary commands in a compromised application. We have already fixed this vulnerability in the following versions: QTS 4.5.2.1566 Build 20210202 and later QTS 4.5.1.1495 Build 20201123 and later QTS 4.3.6.1620 Build 20210322 and later QTS 4.3.4.1632 Build 20210324 and later QTS 4.3.3.1624 Build 20210416 and later QTS 4.2.6 Build 20210327 and later QuTS hero h4.5.1.1491 build 20201119 and later"
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"lang": "es",
"value": "Se ha reportado una vulnerabilidad de inyecci\u00f3n de comando que afecta a QTS y a QuTS hero.\u0026#xa0;Si se explota, esta vulnerabilidad permite a atacantes ejecutar comandos arbitrarios en una aplicaci\u00f3n comprometida.\u0026#xa0;Ya hemos corregido esta vulnerabilidad en las siguientes versiones: QTS versiones 4.5.2.1566 Build 20210202 y posteriores. QTS versiones 4.5.1.1495 Build 20201123 y posteriores. QTS versiones 4.3.6.1620 Build 20210322 y posteriores QTS versiones 4.3.4.1632 Build 20210324 y posteriores QTS versiones 4.3.3.1624 Build 20210416 y posteriores. QTS versiones 4.2.6 Build 20210327 y posteriores. QuTS hero versiones h4.5.1.1491 build 20201119 y posteriores"
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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