CVE-2025-59786 identifies a session management vulnerability classified under CWE-613 (Insufficient Session Expiration) in the 2N Access Commander product by 2N Telekomunikace a.s., specifically affecting version 3.4.2 and earlier. The vulnerability arises because the web application fails to properly invalidate session tokens upon user logout. As a result, multiple session cookies remain valid and active even after the user has logged out, which can allow an attacker who obtains or reuses these session tokens to maintain unauthorized access to the system. The vulnerability has a CVSS v4.0 base score of 6.0, indicating medium severity. The vector metrics specify that the attack requires network access (AV:N), has high attack complexity (AC:H), requires user interaction (UI:P), and does not require privileges (PR:N) or authentication (AT:P). The impact on confidentiality is high (VC:H), integrity is low (VI:L), and availability is none (VA:N). The vulnerability does not affect system components beyond session management and does not have known exploits in the wild. The root cause is insufficient session expiration controls, which is a common security oversight in web applications managing authentication tokens. This flaw could be exploited by attackers to hijack active sessions or bypass logout mechanisms, potentially leading to unauthorized access to sensitive resources managed by 2N Access Commander, which is used for access control and security management in enterprise environments.

The primary impact of CVE-2025-59786 is the potential for unauthorized access due to session hijacking or reuse of session tokens that remain valid after logout. This can compromise confidentiality by allowing attackers to access sensitive access control configurations or user data. Integrity impact is limited but possible if attackers perform unauthorized actions within the session. Availability is not affected. Organizations relying on 2N Access Commander for physical and logical access control may face risks of unauthorized entry or manipulation of access policies. The vulnerability could be exploited in targeted attacks where an attacker can intercept or obtain session cookies, especially in environments with shared or public workstations. The requirement for user interaction and high attack complexity reduces the likelihood of widespread automated exploitation but does not eliminate risk in high-value targets. The absence of known exploits suggests limited current threat activity, but the vulnerability remains a concern for organizations with sensitive access control deployments.

To mitigate CVE-2025-59786, organizations should first upgrade to a patched version of 2N Access Commander once available from the vendor. In the absence of a patch, administrators should enforce strict session management policies, including reducing session timeout durations and implementing server-side session invalidation mechanisms. Employing secure cookie attributes such as HttpOnly, Secure, and SameSite can reduce the risk of session token theft. Network-level protections like VPNs and strict firewall rules can limit exposure of the web interface. Monitoring and logging session activities for anomalies can help detect potential misuse of stale sessions. User education on proper logout procedures and avoiding shared devices can also reduce risk. Additionally, integrating multi-factor authentication (MFA) can mitigate the impact of session token compromise by requiring additional verification. Regular security assessments and penetration testing focused on session management controls are recommended to identify residual risks.