CVE-2023-47565 (GCVE-0-2023-47565)

Vulnerability from cvelistv5 – Published: 2023-12-08 16:06 – Updated: 2025-10-21 23:05
VLAI CISA Shadowserver Previdian
Title
Legacy VioStor NVR
Summary
An OS command injection vulnerability has been found to affect legacy QNAP VioStor NVR models running QVR Firmware 4.x. If exploited, the vulnerability could allow authenticated users to execute commands via a network. We have already fixed the vulnerability in the following versions: QVR Firmware 5.0.0 and later
Severity
8 (High)
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: active Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2023-12-20 05:00 UTC
CWE
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
qnap CNA under the mitre root
CNA scorecard B 86/100 over 63 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
QNAP Systems Inc. VioStor NVR Affected: 4.x , < 5.0.0 (custom)
guessed Create a notification for this product.
Credits
Chad Seaman and Larry Cashdollar of Akamai Technologies reported this vulnerability to CISA
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 2ff74ad7-5db6-40fa-a92e-e1abe69f6475

Vulnerability ID: CVE-2023-47565

Status: Confirmed

Status Updated: 2023-12-21 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2023-12-21
Asserted: 2023-12-21
Scope
Notes: QNAP VioStor NVR OS Command Injection Vulnerability | Affected: QNAP / VioStor NVR | Description: QNAP VioStar NVR contains an OS command injection vulnerability that allows authenticated users to execute commands via a network. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Due date: 2024-01-11 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://www.qnap.com/en/security-advisory/qsa-23-48 ; https://nvd.nist.gov/vuln/detail/CVE-2023-47565
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-78
Feed CISA Known Exploited Vulnerabilities Catalog
Product VioStor NVR
Due Date 2024-01-11
Date Added 2023-12-21
Vendorproject QNAP
Vulnerabilityname QNAP VioStor NVR OS Command Injection Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 13:24 UTC | Updated: 2026-11-04 13:02 UTC
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 71a9dd73-19d6-4cfd-9813-96e907cbd046

Vulnerability ID: CVE-2023-47565

Status: Confirmed

Status Updated: 2026-10-20 00:00 UTC

Exploited: Yes

Characteristics
Severity: 88.0
Timestamps
First Seen: 2025-09-13
Asserted: 2025-09-13
Last Seen: 2026-10-20
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: QNAP / QNAP VioStor NVR | Class: video-system | Severity: High (CVSS 8.8) | IoT: yes | In CISA KEV: yes | Honeypot connections on 2026-10-20: 1
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 1
Iot yes
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class video-system
7D Avg 0
Vendor QNAP
30D Avg 0
90D Avg 0
Product QNAP VioStor NVR
Cisa Kev yes
Connections 1
Observation Date 2026-10-20
Vulnerability Class CVSS
Vulnerability Score 8.8
Vulnerability Severity High
References
Created: 2026-07-01 07:18 UTC | Updated: 2026-10-22 01:02 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 45597e9c-6608-4d46-9859-6f72eb5b21f4

Vulnerability ID: CVE-2023-47565

Status: Confirmed

Status Updated: 2023-12-21 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2023-12-21
Asserted: 2023-12-21
Scope
Notes: KEVIntel entry: Legacy VioStor NVR | Affected: QNAP Systems Inc. / VioStor NVR | CVSS: 8.0 (HIGH) | 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 Legacy VioStor NVR
Vendor QNAP Systems Inc.
Product VioStor NVR
Added Date 2023-12-21T00:00:00.000Z
Cvss Score 8.0
Epss Score None
Cvss Severity HIGH
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-06-23 11:14 UTC | Updated: 2026-06-23 11:14 UTC
Show details on NVD website
To clipboard 

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                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
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                "userInteraction": "NONE",
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                  "cweId": "CWE-78",
                  "description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
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                  "type": "CWE"
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            "advisory": "QSA-23-48",
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        "cveId": "CVE-2023-47565",
        "datePublished": "2023-12-08T16:06:29.861Z",
        "dateReserved": "2023-11-06T14:11:12.322Z",
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}



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Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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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.