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. It is crucial for users to be aware of the potential impacts of this issue.
Details
| Severity | Base Score | CVE |
|---|---|---|
| HIGH | 7.5 | CVE-2026-20848 |
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 improperly synchronize shared resources, the attacker can elevate their privileges, potentially gaining unauthorized access to sensitive data or system functions.
Affected Products
- Windows SMB Server: Vulnerable to privilege escalation due to improper synchronization in concurrent execution.
Mitigation
To mitigate this vulnerability, it is recommended that users apply the latest security updates provided by Microsoft. Additionally, monitoring network access and implementing strict access controls can help reduce the risk of exploitation.