CVE-2025-34043 (GCVE-0-2025-34043)

Vulnerability from cvelistv5 – Published: 2025-06-26 15:51 – Updated: 2026-07-14 22:25 X_Known Exploited Vulnerability
VLAI Shadowserver Previdian
Title
Vacron NVR Remote Command Execution
Summary
A remote command injection vulnerability exists in Vacron Network Video Recorder (NVR) devices v1.4 due to improper input sanitization in the board.cgi script. The vulnerability allows unauthenticated attackers to pass arbitrary commands to the underlying operating system via crafted HTTP requests. These commands are executed with the privileges of the web server process, enabling remote code execution and potential full device compromise. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-06 UTC.
Severity
10 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-23 19:19 UTC
CWE
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
  • CWE-20 - Improper Input Validation
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7803 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Vacron Network Video Recorder (NVR) Affected: 1.4 (custom)
    cpe:2.3:h:nuuo:network_video_recorder:1.4:*:*:*:*:*:*:*
Create a notification for this product.
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: b71029f6-2282-48c1-9507-9c20578b7b9d

Vulnerability ID: CVE-2025-34043

Status: Confirmed

Status Updated: 2026-11-09 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2026-01-07
Asserted: 2026-01-07
Last Seen: 2026-11-09
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Vacron / Network Video Recorder (NVR) | Class: video-system | IoT: yes | In CISA KEV: no | Honeypot connections on 2026-11-09: 138
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 133
Iot yes
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class video-system
7D Avg 105
Vendor Vacron
30D Avg 101
90D Avg 98
Product Network Video Recorder (NVR)
Cisa Kev no
Connections 138
Observation Date 2026-11-09
Vulnerability Class None
Vulnerability Score None
Vulnerability Severity None
References
Created: 2026-07-01 05:53 UTC | Updated: 2026-11-11 01:00 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 3faf54d9-d14c-4a52-85b8-7bca0bac9a00

Vulnerability ID: CVE-2025-34043

Status: Confirmed

Status Updated: 2026-01-10 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2026-01-10
Asserted: 2026-01-10
Scope
Notes: KEVIntel entry: Vacron NVR Remote Command Execution | Affected: Vacron / Network Video Recorder (NVR) | CVSS: 10.0 (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 Vacron NVR Remote Command Execution
Vendor Vacron
Product Network Video Recorder (NVR)
Added Date 2026-01-10T00:00:00.000Z
Cvss Score 10.0
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: 2026-06-19 12:42 UTC | Updated: 2026-06-19 12:42 UTC
Show details on NVD website
To clipboard 

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            "x_known-exploited-vulnerability"
          ],
          "title": "Vacron NVR Remote Command Execution",
          "x_generator": {
            "engine": "Vulnogram 0.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "assignerShortName": "VulnCheck",
        "cveId": "CVE-2025-34043",
        "datePublished": "2025-06-26T15:51:22.357Z",
        "dateReserved": "2025-04-15T19:15:22.547Z",
        "dateUpdated": "2026-07-14T22:25:40.677Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.