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Vulnerability record · CVE-2025-34043 · published 26 June 2025

CVE-2025-34043: Improper input validation vulnerability

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.

10.0 CVSS 4.0 Critical EPSS 7.5% · top 5.7% CWE-20 · Improper input validationCWE-78 · OS command injection Deferred
10.0CVSS 4.0 base score
7.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
7References
17 Jun 2026Last modified by NVD

Description

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://ssd-disclosure.com/ssd-advisory-vacron-nvr-remote-command-execution/
https://vulncheck.com/advisories/vacron-nvr-remote-command-execution
https://www.broadcom.com/support/security-center/attacksignatures/detail?asid=30386
https://www.sonicwall.com/blog/vacron-network-video-recorder-remote-command-execution
https://www.tenable.com/plugins/nessus/104124
https://www.vacron.com/
https://ssd-disclosure.com/ssd-advisory-vacron-nvr-remote-command-execution/

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Source: NIST National Vulnerability Database (record CVE-2025-34043), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.