CVE-2025-34043Known exploitationPublic exploitNetwork attack vector

Unauthenticated command execution via unsanitized CGI parameter

Published Jun 26, 2025 · Updated Jul 14, 2026

OS command injection in Vacron Network Video Recorder firmware 1.4 allows remote attackers to execute commands via crafted HTTP requests. The board.cgi endpoint accepts a cmd parameter and passes its unsanitized value to the underlying operating system for execution. No authentication or user interaction is required, and commands run with the web server process's privileges, enabling full device compromise.

CVSS severity10.0
Critical
EPSS probability7.46%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Vacron Network Video Recorder firmware 1.4 allows remote attackers to execute commands via crafted HTTP requests. The board.cgi endpoint accepts a cmd parameter and passes its unsanitized value to the underlying operating system for execution. No authentication or user interaction is required, and commands run with the web server process's privileges, enabling full device compromise.

The record

CVE
CVE-2025-34043
Published
Jun 26, 2025
Updated
Jul 14, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, CWE-78, T1190, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 6, 2025Exploitation reportedShadowserver honeypot observation of Vacron NVR exploitation
  2. Jun 26, 2025CVE publishedPublication date reported by the CVE source.
  3. Jul 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

10.0VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1190Exploit Public-Facing Application
T1059.004Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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