CVE-2026-69403
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk28th percentile - higher than 28% of all known CVEs
Summary
A missing authorization vulnerability in Windows SMB Server allows an authorized attacker to disclose information locally.
Risk Assessment
An attacker could access data shared via SMB, potentially leading to confidentiality breaches.
Recommendation
Install Windows security updates and restrict access to the SMB server.
Other vulnerabilities in Windows SMB Server
See all- CVE-2026-26128High
Improper authentication in Windows SMB Server allows an authorized attacker to elevate privileges locally.
- CVE-2019-0703MediumActively exploited
An information disclosure vulnerability exists in the way that the Windows SMB Server handles certain requests, aka 'Windows SMB Information Disclosure Vulnerability'. This CVE ID is unique from CVE-2019-0704 and CVE-2019-0821.
- CVE-2026-96325High
A missing reference to an active allocated resource in Windows SMB Server allows an unauthorized attacker to deny service over a network. The flaw lies in how the SMB service manages resources.
- CVE-2026-88127High
Use after free in Windows SMB Server allows an authorized attacker to elevate privileges locally.
- CVE-2026-70133High
Allocation of resources without limits or throttling in Windows SMB Server allows an unauthorized attacker to deny service over a network.
- CVE-2026-72949High
Null pointer dereference in Windows SMB Server Network Transport Driver (srvnet.sys) allows an unauthorized attacker to deny service over a network.
- CVE-2026-69374Medium
The vulnerability in Windows SMB Server is an allocation of resources without limits or throttling. It allows an authorized attacker to deny service over a network.
- CVE-2026-62800High
Heap-based buffer overflow in Windows SMB Server allows an authorized attacker to execute code over a network.
- CVE-2026-62790High
Heap-based buffer overflow in Windows SMB Server allows an authorized attacker to execute code over a network.
- CVE-2026-57089High
Use-after-free vulnerability in Windows SMB Server Network Transport Driver (srvnet.sys) allows an unauthorized attacker to execute code over a network.
Original NVD description (English source)
Missing authorization in Windows SMB Server allows an authorized attacker to disclose information locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS