Product:
Windows SMB Server
Summary
Concurrent execution using shared resource with improper synchronization in Windows SMB Server allows an authorized attacker to deny service over a network. This vulnerability can lead to significant disruptions in service availability. Attackers can exploit this flaw to impact the performance and reliability of the affected system.
Details
| Severity | Base Score | CVE |
|---|---|---|
| MEDIUM | 5.3 | CVE-2026-20927 |
Exploitation
To exploit this vulnerability, an attacker must have authorized access to the network and can then trigger a race condition by executing concurrent operations that manipulate shared resources. This improper synchronization can lead to a denial of service, effectively disrupting the normal functioning of the Windows SMB Server.
Affected Products
- Windows SMB Server: Vulnerable to denial of service due to improper synchronization in concurrent execution.
Mitigation
To mitigate this vulnerability, it is recommended to apply the latest security updates provided by Microsoft. Regularly updating systems and monitoring for unusual network activity can also help in reducing the risk of exploitation.