CVE-2025-34054 is a critical OS command injection vulnerability (CWE-78) found in AVTECH IP camera, DVR, and NVR devices. The vulnerability arises from improper input sanitization in the Search.cgi?action=cgi_query CGI endpoint. Specifically, the parameters 'username' and 'queryb64str' are passed to the wget command without neutralizing special shell characters, enabling attackers to inject arbitrary shell commands. Since wget runs with root privileges, successful exploitation results in full system compromise. The vulnerability requires no authentication or user interaction, making it trivially exploitable remotely over the network. The affected firmware versions cover a broad range of AVTECH products, indicating a widespread exposure. The Shadowserver Foundation observed exploitation attempts as early as January 2025, underscoring active threat actor interest. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H) reflects the vulnerability's criticality, with high impact on confidentiality, integrity, and availability. No official patches or mitigations have been published yet, increasing the urgency for defensive measures. Attackers exploiting this flaw can execute arbitrary commands as root, potentially leading to device takeover, surveillance data theft, lateral movement, or use of compromised devices in botnets or further attacks.

For European organizations, the impact of CVE-2025-34054 is severe. AVTECH devices are commonly deployed in physical security systems across enterprises, government facilities, and critical infrastructure. Successful exploitation can lead to complete device compromise, enabling attackers to manipulate video feeds, disable surveillance, or exfiltrate sensitive footage. Root-level access allows attackers to establish persistent backdoors, move laterally within networks, and potentially disrupt broader IT and OT environments. This can result in loss of confidentiality, integrity, and availability of surveillance systems, undermining physical security and compliance with data protection regulations such as GDPR. The vulnerability's unauthenticated nature and ease of exploitation increase the risk of widespread attacks, including ransomware or espionage campaigns targeting European entities. Additionally, compromised devices could be leveraged in large-scale DDoS attacks or as entry points for supply chain compromises. The lack of patches further exacerbates the threat, necessitating immediate risk management.

1. Immediately isolate AVTECH IP cameras, DVRs, and NVRs from public internet access by disabling remote management interfaces or restricting access via firewalls and VPNs. 2. Implement strict network segmentation to separate surveillance devices from critical IT and OT networks, limiting lateral movement opportunities. 3. Monitor network traffic for unusual wget command invocations or suspicious outbound connections originating from AVTECH devices. 4. Employ intrusion detection/prevention systems (IDS/IPS) with signatures targeting command injection patterns and known exploitation attempts against AVTECH devices. 5. Regularly audit device firmware versions and maintain an inventory to identify affected units. 6. Engage with AVTECH support channels to obtain or request security patches or firmware updates addressing this vulnerability. 7. If patching is not immediately available, consider temporary mitigations such as disabling the vulnerable CGI endpoint or applying custom firewall rules to block malicious parameter patterns. 8. Educate security teams about this vulnerability to enhance incident response readiness. 9. Review and harden device configurations, changing default credentials and disabling unnecessary services to reduce attack surface. 10. Plan for rapid deployment of patches once released, including testing and validation in controlled environments.