CVE-2025-15553
Published: 16 March 2026
Summary
CVE-2025-15553 is a high-severity Insufficient Session Expiration (CWE-613) vulnerability in Truesec Lapswebui. Its CVSS base score is 7.1 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 3.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Locks the device (typically after inactivity) until re-authentication, addressing insufficient session expiration by preventing indefinite access.
Automatically terminating sessions after a defined period directly enforces session expiration, preventing indefinite session lifetimes that attackers can exploit.
Re-authentication after inactivity or time-based triggers prevents indefinite use of potentially hijacked or stale sessions.
Terminating sessions and network connections upon completion prevents insufficient session expiration.
Directly enforces termination of network sessions after inactivity or end-of-session, preventing indefinite session lifetime.
Consistent clocks across systems allow session expiration and timeout enforcement to function as intended in distributed environments.
When the non-persistent artifact is a session or connection, mandatory termination implements the missing expiration that CWE-613 describes.
Timed refresh of session-related information or on-demand generation plus deletion implements proper session expiration.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Broken session expiration in LAPS password UI directly enables local credential disclosure (T1552) leading to privilege escalation (T1068).
NVD Description
Non-working logout functionality in Truesec’s LAPSWebUI before version 2.4 allows an attacker with access to a workstation to escalate their privileges via disclosure of local admin password.
Deeper analysisAI
CVE-2025-15553 affects Truesec’s LAPSWebUI in versions prior to 2.4, where the logout functionality fails to operate correctly. This vulnerability, tracked under CWE-613 (Insufficient Session Expiration), enables privilege escalation by disclosing local administrator passwords. It carries a CVSS v3.1 base score of 7.1, reflecting local vector access (AV:L), low attack complexity (AC:L), low privileges required (PR:L), no user interaction (UI:N), unchanged scope (S:U), high confidentiality and integrity impacts (C:H/I:H), and no availability impact (A:N). The issue was published on 2026-03-16.
An attacker with physical or logical access to an affected workstation and possessing low-level privileges can exploit the broken logout mechanism. By leveraging this flaw with low complexity and no need for user interaction, the attacker can disclose the local admin password, enabling privilege escalation on the system.
The advisory from Reversec Labs at https://labs.reversec.com/advisories/2026/03/insecure-logout-functionality-in-truesec-lapswebui provides details on the vulnerability. Mitigation requires upgrading to LAPSWebUI version 2.4 or later, which addresses the logout functionality issue.
Details
- CWE(s)