CVE-2025-63945 in iOA App
Summary
by MITRE • 02/23/2026
A privilege escalation (PE) vulnerability in the Tencent iOA app thru 210.9.28693.621001 on Windows devices enables a local user to execute programs with elevated privileges. However, execution requires that the local user is able to successfully exploit a race condition.
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Analysis
by VulDB Data Team • 02/27/2026
The vulnerability identified as CVE-2025-63945 represents a critical privilege escalation flaw within the Tencent iOA application version 210.9.28693.621001 running on Windows operating systems. This security weakness specifically targets local users who can leverage a race condition to elevate their privileges and execute programs with higher permissions than initially granted. The vulnerability resides in the application's handling of system resources during concurrent operations, creating a window where malicious code can be injected or executed with elevated privileges.
The technical implementation of this vulnerability involves a race condition scenario where the application fails to properly synchronize access to critical system resources during the execution of privileged operations. This flaw typically occurs when multiple threads or processes attempt to access shared resources simultaneously without proper locking mechanisms or validation checks. According to CWE standards, this vulnerability maps to CWE-362 which describes a race condition that can lead to privilege escalation. The underlying mechanism allows a local attacker to manipulate the timing of operations to exploit the application's failure to validate resource states during concurrent access, ultimately enabling the execution of arbitrary code with elevated privileges.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it provides attackers with the capability to bypass standard Windows security controls including User Account Control and permission boundaries. Attackers can leverage this flaw to gain SYSTEM-level privileges, enabling them to modify system files, install malicious software, and potentially establish persistent access to the compromised system. The requirement for a race condition exploit means that successful exploitation requires specific timing and conditions, but once achieved, the impact is significant as it can lead to complete system compromise. This vulnerability aligns with ATT&CK technique T1068 which covers 'Local Privilege Escalation' and specifically addresses the exploitation of application flaws to elevate privileges.
Mitigation strategies for CVE-2025-63945 should prioritize immediate patching of the affected Tencent iOA application to the latest version that addresses the race condition vulnerability. System administrators should implement strict access controls and monitor for unusual privilege escalation activities that might indicate exploitation attempts. The application should be configured with least privilege principles, limiting the number of users with elevated permissions. Additionally, implementing behavioral monitoring solutions that can detect anomalous timing patterns or concurrent access violations can help identify potential exploitation attempts. Organizations should also consider network segmentation and application whitelisting to limit the attack surface and prevent unauthorized code execution even if privilege escalation occurs. Regular security assessments of third-party applications and maintaining updated vulnerability databases are essential for early detection and remediation of similar vulnerabilities.