IBM Concert 2.1.0 Local Priv Esc via Symlink Race
CVE-2025-64645 Published on December 26, 2025
Multiple Vulnerabilities in IBM Concert Software.
IBM Concert 1.0.0 through 2.1.0 could allow a local user to escalate their privileges due to a race condition of a symbolic link.
Vulnerability Analysis
CVE-2025-64645 can be exploited with local system access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is a TOCTTOU Vulnerability?
The software checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the software to perform invalid actions when the resource is in an unexpected state. This weakness can be security-relevant when an attacker can influence the state of the resource between check and use. This can happen with shared resources such as files, memory, or even variables in multithreaded programs.
CVE-2025-64645 has been classified to as a TOCTTOU vulnerability or weakness.
Products Associated with CVE-2025-64645
Want to know whenever a new CVE is published for IBM Concert? stack.watch will email you.
Affected Versions
IBM Concert:- Version 1.0.0, <= 2.1.0 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.