CVE-2026-49801
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk22th percentile - higher than 22% of all known CVEs
Summary
Use of uninitialized resource in Windows SMB allows an authorized attacker to disclose information locally.
Risk Assessment
The risk involves potential reading of uninitialized memory data by an authorized user.
Recommendation
Install the latest security updates from Microsoft.
Other vulnerabilities in Windows SMB
See all- CVE-2026-58531High
A race condition exists in Windows SMB during concurrent execution using a shared resource. An authenticated attacker can elevate privileges over the network.
- 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-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)
Use of uninitialized resource in Windows SMB allows an authorized attacker to disclose information locally.