Product:
Windows SMB Server
Summary
Concurrent execution using shared resource with improper synchronization in Windows SMB Server allows an authorized attacker to elevate privileges over a network. This vulnerability can lead to significant security risks if exploited. Attackers can gain unauthorized access to sensitive information and perform actions with elevated privileges.
Details
| Severity | Base Score | CVE |
|---|---|---|
| HIGH | 7.5 | CVE-2026-20919 |
Exploitation
To exploit this vulnerability, an attacker must have authorized access to the network and can then leverage the race condition in the Windows SMB Server. By executing concurrent operations that manipulate shared resources, the attacker can elevate their privileges, potentially gaining control over the system and accessing sensitive data.
Affected Products
- Windows SMB Server: Vulnerable to privilege escalation due to improper synchronization in concurrent execution.
Mitigation
To mitigate this vulnerability, it is recommended to apply the latest security updates provided by Microsoft. Additionally, monitoring network activity for unusual behavior and restricting access to sensitive resources can help reduce the risk of exploitation.