CVE-2025-36149 is a vulnerability classified under CWE-1021, which involves improper restriction of rendered UI layers or frames in IBM Concert Software versions 1.0.0 through 2.0.0. This flaw allows a remote attacker to hijack the clicking actions of a victim, effectively enabling unauthorized commands or actions to be executed without the victim's consent. The vulnerability arises because the software does not adequately restrict how UI elements are layered or framed, permitting an attacker to overlay or manipulate UI components to intercept or redirect user clicks. The CVSS 3.1 base score is 6.3 (medium), reflecting that the attack vector is network-based (AV:N), with low attack complexity (AC:L), requiring low privileges (PR:L), and no user interaction (UI:N). The impact affects confidentiality, integrity, and availability at a low level (C:L/I:L/A:L). Although no exploits are currently known in the wild and no patches have been released, the vulnerability poses a risk of unauthorized actions being performed remotely, potentially leading to data leakage or service disruption. The vulnerability is particularly concerning for environments where IBM Concert Software is used for critical workflows or sensitive data handling, as attackers could manipulate user actions to compromise system operations.

For European organizations, this vulnerability could lead to unauthorized actions being executed remotely on systems running IBM Concert Software, potentially compromising sensitive data or disrupting business processes. The hijacking of click actions could allow attackers to perform unintended commands, leading to data integrity issues or availability problems if critical functions are manipulated. Although the impact is rated medium, organizations in sectors such as finance, government, and critical infrastructure that rely on IBM Concert Software for operational tasks may face increased risk. The requirement for low privileges means insider threats or compromised accounts could exploit this vulnerability more easily. The lack of user interaction requirement increases the risk of automated exploitation once a vulnerability is weaponized. Given the absence of patches, organizations must be vigilant to prevent exploitation and limit exposure. The impact on confidentiality, integrity, and availability, while limited, could cascade in complex environments, affecting compliance with European data protection regulations such as GDPR if sensitive data is exposed or altered.

1. Immediately inventory and identify all instances of IBM Concert Software versions 1.0.0 through 2.0.0 within the organization. 2. Restrict network access to IBM Concert Software interfaces to trusted internal networks and limit exposure to the internet or untrusted zones. 3. Implement strict access controls and monitor for unusual privilege escalations or suspicious user activities related to IBM Concert Software. 4. Employ application-layer firewalls or endpoint detection systems capable of identifying anomalous UI manipulation or click hijacking behaviors. 5. Educate users about the risk of unauthorized UI actions and encourage reporting of unexpected software behavior. 6. Monitor IBM security advisories closely for the release of patches or updates addressing CVE-2025-36149 and apply them promptly once available. 7. Consider deploying compensating controls such as multi-factor authentication and session monitoring to reduce the risk of exploitation by low-privilege attackers. 8. Conduct regular security assessments and penetration testing focusing on UI-layer vulnerabilities and clickjacking techniques within the IBM Concert Software environment.