CVE-2025-55322 is a high-severity vulnerability identified in Microsoft OmniParser version 1.0.0. The vulnerability is classified under CWE-1327, which relates to binding to an unrestricted IP address. Specifically, the OmniParser service binds to an unrestricted IP address, allowing it to listen on all network interfaces without proper access restrictions. This misconfiguration enables unauthorized remote attackers to connect to the service over the network and potentially execute arbitrary code. The vulnerability does not require any authentication or user interaction, making exploitation straightforward if the vulnerable service is exposed. The CVSS v3.1 base score is 7.3, indicating a high severity with network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), and no user interaction (UI:N). The impact includes potential confidentiality, integrity, and availability losses, as attackers can execute code remotely, possibly leading to data breaches, system compromise, or denial of service. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability was published on September 24, 2025, with the reservation date on August 12, 2025.

For European organizations, this vulnerability poses a significant risk, especially for those using Microsoft OmniParser 1.0.0 in their infrastructure. Since the vulnerability allows remote code execution without authentication, attackers can gain unauthorized access to sensitive systems, potentially leading to data exfiltration, service disruption, or lateral movement within networks. Organizations in sectors such as finance, healthcare, government, and critical infrastructure are particularly at risk due to the sensitive nature of their data and the potential impact of service outages. The exposure of OmniParser services to public or internal networks without proper segmentation or firewall rules increases the attack surface. Given the high connectivity and reliance on Microsoft products across Europe, the vulnerability could be exploited to target European enterprises and public sector entities, resulting in reputational damage, regulatory penalties under GDPR, and operational disruptions.

To mitigate CVE-2025-55322, European organizations should take immediate and specific actions beyond generic security hygiene: 1) Identify and inventory all instances of Microsoft OmniParser 1.0.0 within their environment, including development, testing, and production systems. 2) Restrict network exposure by configuring OmniParser to bind only to trusted, internal IP addresses rather than all interfaces. If configuration options are not available, use host-based firewalls or network ACLs to limit access to the service to authorized IP ranges. 3) Monitor network traffic for unusual connections to OmniParser ports and implement intrusion detection rules to alert on suspicious activity. 4) Apply any available patches or updates from Microsoft as soon as they are released. If patches are not yet available, consider temporary workarounds such as disabling the OmniParser service where feasible or isolating affected systems in segmented network zones. 5) Conduct regular vulnerability scans and penetration tests focusing on network services to detect similar binding misconfigurations. 6) Educate system administrators about secure service binding practices and the risks of unrestricted IP bindings.