CVE-2025-34043
Published: 26 June 2025
Summary
CVE-2025-34043 is a critical-severity Improper Input Validation (CWE-20) vulnerability in Ssd Disclosure (inferred from references). Its CVSS base score is 10.0 (Critical).
Operationally, ranked in the top 21.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
A remote command injection vulnerability affects Vacron Network Video Recorder devices running version 1.4. The flaw stems from improper input sanitization in the board.cgi script, which permits unauthenticated remote attackers to supply arbitrary operating system commands through specially crafted HTTP requests. These commands execute with the privileges of the web server process, enabling remote code execution that can lead to full device compromise. The issue is tracked under CWE-20 and CWE-78 and carries a CVSS 4.0 score of 10.0.
Unauthenticated attackers with network access can exploit the vulnerability by sending malicious requests to the affected CGI endpoint, achieving arbitrary command execution without authentication or user interaction. This capability supports initial access, persistence, or further lateral movement within an environment containing the NVR devices. Evidence of exploitation attempts against the vulnerability was recorded by the Shadowserver Foundation on 2025-02-06 UTC.
Public advisories and detection resources are available from sources including SSD Disclosure, VulnCheck, Broadcom, SonicWall, and Tenable, though specific patch or configuration guidance is not detailed in the provided references. The EPSS score remains flat at 0.0111 with no material increase observed after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-19211
Vulnerability details
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…
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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.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Directly implements checks on information inputs to reject invalid data before processing.
Security testing and developer training directly verify and enforce proper input validation, reducing exploitability of injection and malformed-data weaknesses.
Security testing and evaluation at multiple SDLC stages directly detects missing or flawed input validation, with the required remediation process ensuring fixes are applied.
Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.
Spam protection mechanisms perform filtering and detection on inbound/outbound messages, directly compensating for missing or weak input validation of unsolicited content.