CVE-2025-34043
CVE-2025-34043 is a critical-severity vulnerability with a CVSS 4.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.
Key facts
- Severity: Critical (CVSS 4.0 base score 10.0)
- EPSS exploit prediction: 9% (95th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-19211
- Weakness: CWE-20
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2025-34043?
- 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.
- How severe is CVE-2025-34043?
- CVE-2025-34043 has a CVSS 4.0 base score of 10.0, rated critical severity.
- Is CVE-2025-34043 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-34043?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2025-34043 have an EU (EUVD) identifier?
- Yes. CVE-2025-34043 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19211.
- When was CVE-2025-34043 published?
- CVE-2025-34043 was published on 2025-06-26 and last updated on 2026-06-17.
References
- 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/
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