CVE-2025-29449 is a medium-severity vulnerability identified in the twonav software version 2.1.18-20241105. The vulnerability stems from an issue in the link identification function that allows a remote attacker to obtain sensitive information without requiring authentication or user interaction. The vulnerability is categorized under CWE-918, which relates to improper control of dynamically allocated memory or improper handling of external inputs leading to information disclosure. The CVSS v3.1 base score is 6.5, reflecting a network attack vector (AV:N), high attack complexity (AC:H), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), high impact on confidentiality (C:H), low impact on integrity (I:L), and no impact on availability (A:N). This indicates that an attacker can remotely exploit the vulnerability over the network but must overcome certain complexity barriers, such as specific conditions or environment configurations, to successfully extract sensitive data. The vulnerability does not affect system integrity or availability but compromises confidentiality, potentially exposing sensitive information handled by the link identification function. No patches or vendor information are currently available, and no known exploits have been reported in the wild as of the publication date (April 17, 2025).

For European organizations, the primary impact of CVE-2025-29449 is the unauthorized disclosure of sensitive information processed or stored by the twonav application. Given that twonav is a navigation and mapping software often used in outdoor activities, logistics, and possibly by organizations involved in geospatial data management, the exposure of sensitive location data or user information could lead to privacy violations, competitive disadvantages, or operational security risks. Confidentiality breaches could affect personal data under GDPR regulations, leading to legal and financial repercussions. The medium severity and high confidentiality impact suggest that while the vulnerability does not directly disrupt operations or data integrity, the leakage of sensitive information could be leveraged for further targeted attacks or espionage. The high attack complexity reduces the likelihood of widespread exploitation but does not eliminate risk, especially for high-value targets or organizations with sensitive geospatial data. The absence of known exploits in the wild provides a window for proactive mitigation before active attacks emerge.

Conduct an immediate inventory to identify all instances of twonav version 2.1.18-20241105 within the organization’s IT environment, including endpoints, mobile devices, and any embedded systems. Restrict network access to twonav services, especially from untrusted or external networks, using network segmentation and firewall rules to minimize exposure to remote attackers. Implement strict monitoring and logging of network traffic and application behavior related to twonav, focusing on unusual requests or patterns targeting the link identification function. Engage with the software vendor or community to obtain updates or patches as soon as they become available; if no official patch exists, consider disabling or limiting the use of the link identification feature until remediation is possible. Apply application-layer controls such as Web Application Firewalls (WAFs) or Intrusion Prevention Systems (IPS) with custom rules to detect and block exploitation attempts targeting the vulnerability. Educate relevant staff about the sensitivity of geospatial and location data handled by twonav and enforce strict data handling policies to reduce the impact of potential data leakage. Perform regular vulnerability scanning and penetration testing focused on twonav and related components to detect any signs of exploitation or residual risks.