CVE-2025-44895 is a medium severity stack overflow vulnerability identified in the FW-WGS-804HPT device firmware version 1.305b241111. The vulnerability arises from improper handling of the ipv4Aclkey parameter within the web_acl_ipv4BasedAceAdd function. Specifically, the function fails to adequately validate or limit the input size for ipv4Aclkey, leading to a stack-based buffer overflow (CWE-121). This type of vulnerability can allow an attacker to overwrite adjacent memory on the stack, potentially leading to arbitrary code execution, denial of service, or other unpredictable behavior. The CVSS 3.1 base score is 6.5, reflecting a network attack vector (AV:N) with low attack complexity (AC:L), no privileges required (PR:N), and no user interaction (UI:N). The impact is limited to confidentiality and integrity (C:L/I:L), with no direct availability impact (A:N). No known exploits are currently reported in the wild, and no patches or vendor advisories have been published yet. The vulnerability affects a specific firmware version of the FW-WGS-804HPT device, which appears to be a network appliance or firewall device, given the context of IPv4 ACL (Access Control List) management. The lack of vendor and product details limits precise identification, but the vulnerability's nature suggests it targets embedded network security devices that manage IPv4 ACL rules via a web interface. Attackers exploiting this vulnerability could remotely send specially crafted requests to the device's web management interface, triggering the stack overflow and potentially gaining unauthorized access or control over the device. This could compromise network security, allowing attackers to bypass firewall rules or pivot into internal networks.

For European organizations, the exploitation of CVE-2025-44895 could have significant security implications, especially for those relying on the FW-WGS-804HPT device or similar network appliances for perimeter defense. Successful exploitation may lead to unauthorized disclosure of sensitive network configuration data (confidentiality impact) and unauthorized modification of ACL rules or device settings (integrity impact), undermining the security posture. Although availability is not directly impacted, the potential for arbitrary code execution could enable attackers to disrupt services indirectly. Given the device's role in controlling network access, compromise could facilitate lateral movement within corporate networks, data exfiltration, or further attacks on critical infrastructure. European organizations in sectors such as finance, telecommunications, government, and critical infrastructure, which often deploy specialized network security devices, could be particularly at risk. The absence of known exploits suggests a window for proactive mitigation, but also the need for vigilance as attackers may develop exploits targeting this vulnerability.

1. Immediate identification and inventory of all FW-WGS-804HPT devices within the network environment to assess exposure. 2. Restrict access to the web management interface of the affected devices to trusted administrative networks only, using network segmentation and firewall rules. 3. Implement strict input validation and filtering at network perimeters to block malformed or suspicious IPv4 ACL management requests. 4. Monitor network traffic and device logs for anomalous activity related to ACL modifications or unexpected web interface requests. 5. Engage with the device vendor or manufacturer to obtain firmware updates or patches addressing this vulnerability as soon as they become available. 6. If no patch is available, consider temporary mitigation by disabling remote web management interfaces or switching to alternative management methods such as secure CLI access via SSH with strong authentication. 7. Conduct penetration testing and vulnerability assessments focusing on network appliances to detect potential exploitation attempts. 8. Maintain up-to-date incident response plans that include procedures for compromised network devices to minimize impact.