CVE-2025-55322 is a high-severity vulnerability identified in Microsoft OmniParser version 1.0.0, categorized under CWE-1327, which concerns binding to an unrestricted IP address. This vulnerability arises when the OmniParser service binds its network listener to an unrestricted IP address, such as 0.0.0.0, allowing it to accept connections from any network interface. Consequently, an unauthorized attacker can remotely execute code over the network without requiring authentication or user interaction. The vulnerability has a CVSS v3.1 base score of 7.3, indicating a high level of risk. The attack vector is network-based (AV:N), with low attack complexity (AC:L), no privileges required (PR:N), and no user interaction needed (UI:N). The impact affects confidentiality, integrity, and availability at a low level each (C:L/I:L/A:L), meaning an attacker can potentially access sensitive information, modify data, and disrupt service, albeit to a limited extent. The scope is unchanged (S:U), meaning the vulnerability affects the same security scope. The exploitability level is unproven (E:U), and the remediation level is official (RL:O) with confirmed report confidence (RC:C). No known exploits are currently in the wild, and no patches have been linked yet. The vulnerability is significant because binding to an unrestricted IP address can expose the service to unauthorized network access, increasing the attack surface and enabling remote code execution attacks that could compromise systems running OmniParser. This is particularly critical for environments where OmniParser processes sensitive data or operates in exposed network segments.

For European organizations, the impact of CVE-2025-55322 could be substantial, especially for those using Microsoft OmniParser 1.0.0 in production environments. The vulnerability allows remote unauthenticated attackers to execute arbitrary code, potentially leading to data breaches, service disruption, and unauthorized system control. This could affect sectors with high data sensitivity such as finance, healthcare, government, and critical infrastructure. Given the network-based attack vector and lack of required privileges or user interaction, attackers could exploit this vulnerability remotely, increasing the risk of widespread compromise. Additionally, organizations with OmniParser instances exposed to public or internal networks without proper segmentation or firewall rules are at higher risk. The potential for integrity and availability impacts could disrupt business operations, cause data corruption, or enable lateral movement within networks. The lack of current exploits in the wild provides a window for proactive mitigation, but the high severity score necessitates urgent attention to prevent future exploitation.

European organizations should immediately audit their environments to identify any deployments of Microsoft OmniParser version 1.0.0. Until an official patch is released, organizations should implement network-level mitigations such as restricting access to OmniParser services by binding the service explicitly to trusted IP addresses or localhost only, rather than 0.0.0.0 or other unrestricted addresses. Employ strict firewall rules to limit inbound traffic to known and trusted sources. Network segmentation should be enforced to isolate OmniParser instances from untrusted networks. Monitoring and logging network connections to OmniParser can help detect anomalous access attempts. Organizations should also prepare to apply official patches or updates from Microsoft as soon as they become available. Additionally, consider deploying intrusion detection/prevention systems (IDS/IPS) tuned to detect unusual OmniParser activity. Conduct internal penetration testing to verify that the vulnerability is mitigated and that no unauthorized access is possible. Finally, review and update incident response plans to address potential exploitation scenarios related to this vulnerability.