CVE-2025-39240 is a high-severity vulnerability affecting the Hikvision DS-3WAP622G-SI wireless access point devices, specifically versions up to and including V1.1.5402 build241014 (E2254P02). The vulnerability arises from insufficient input validation in the device's handling of certain network packets. An attacker who has valid credentials (authenticated access) to the device can exploit this flaw by sending specially crafted packets containing malicious commands. This leads to arbitrary remote command execution on the affected device without requiring any user interaction. The vulnerability has a CVSS v3.1 base score of 7.2, reflecting its high impact on confidentiality, integrity, and availability. The attack vector is network-based (AV:N), with low attack complexity (AC:L), but requires high privileges (PR:H) and no user interaction (UI:N). Successful exploitation can allow an attacker to execute arbitrary commands remotely, potentially leading to full compromise of the device, unauthorized access to the network, interception or manipulation of wireless traffic, and disruption of network services. No known exploits are currently reported in the wild, but the presence of valid credentials is a prerequisite, which limits exploitation to insiders or attackers who have already compromised user credentials or management interfaces. The vulnerability is significant given the role of wireless access points as critical network infrastructure components, often bridging wired and wireless segments and managing sensitive data flows. The lack of a published patch at the time of disclosure increases the urgency for mitigation and monitoring.

For European organizations, this vulnerability poses a substantial risk to network security and operational continuity. Compromise of Hikvision DS-3WAP622G-SI devices could lead to unauthorized access to internal networks, data exfiltration, and lateral movement within corporate environments. Given the high confidentiality, integrity, and availability impacts, attackers could disrupt critical business operations, intercept sensitive communications, or deploy further malware payloads. Organizations in sectors such as government, critical infrastructure, finance, and manufacturing—where secure wireless connectivity is essential—may face increased exposure. The requirement for valid credentials means that insider threats or credential theft campaigns could be leveraged to exploit this vulnerability. Additionally, the lack of user interaction needed for exploitation facilitates automated or remote attacks once credentials are obtained. The absence of known exploits in the wild currently reduces immediate risk but does not preclude targeted attacks or future exploit development. The vulnerability also raises concerns about supply chain security and device lifecycle management, as many organizations may not be aware of the affected firmware versions in their deployed devices.

1. Immediate Inventory and Version Assessment: Organizations should identify all deployed Hikvision DS-3WAP622G-SI devices and verify their firmware versions. Devices running versions prior to V1.1.5402 build241014 (E2254P02) are vulnerable. 2. Access Control Hardening: Restrict management interface access to trusted networks and IP addresses. Implement network segmentation to isolate wireless access points from critical systems. 3. Credential Management: Enforce strong, unique passwords for device management accounts and rotate credentials regularly. Employ multi-factor authentication (MFA) where supported to reduce the risk of credential compromise. 4. Network Monitoring and Anomaly Detection: Deploy network intrusion detection systems (NIDS) and monitor for unusual packet patterns or command execution attempts targeting access points. 5. Vendor Coordination and Patch Management: Engage with Hikvision for official patches or firmware updates addressing this vulnerability. Apply updates promptly once available. 6. Temporary Workarounds: If patches are unavailable, consider disabling remote management features or limiting management protocols to reduce attack surface. 7. Incident Response Preparedness: Prepare for potential exploitation scenarios by establishing response plans, including device isolation and forensic analysis capabilities. 8. Supply Chain Review: Evaluate procurement and deployment policies for network devices to ensure timely updates and vulnerability management in the future.