CVE-2026-58531
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk40th percentile - higher than 40% of all known CVEs
Summary
A race condition exists in Windows SMB during concurrent execution using a shared resource. An authenticated attacker can elevate privileges over the network.
Risk Assessment
An authenticated attacker on the network can gain elevated privileges, potentially leading to system compromise or access to sensitive data.
Recommendation
Install the latest Windows security updates from Microsoft. Restrict SMB access to trusted users only.
Other vulnerabilities in Windows SMB
See all- CVE-2026-50690Medium
Use of an uninitialized resource in Windows SMB allows an authorized attacker to disclose information locally.
- CVE-2026-54997Medium
A vulnerability in Windows SMB allows an authorized attacker to disclose information locally by using an uninitialized resource.
- CVE-2026-49801Medium
Use of uninitialized resource in Windows SMB allows an authorized attacker to disclose information locally.
- CVE-2021-36974High
Vulnerability in Windows SMB allows elevation of privilege. An attacker could exploit this flaw to gain higher privileges on the system.
- CVE-2021-36972Medium
Information disclosure vulnerability in Windows SMB. It may allow an attacker to access information that should be protected.
- CVE-2021-36960High
Information disclosure vulnerability in Windows SMB. Could lead to data exposure.
- CVE-2021-33783Medium
Information disclosure vulnerability in Windows SMB. Could allow access to sensitive data transmitted over SMB.
Original NVD description (English source)
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB allows an authorized attacker to elevate privileges over a network.