CVE-2026-62782 Microsoft CVE debrief

Who should care

System administrators and security teams responsible for Windows SMB Client configurations and updates should be aware of this vulnerability. Additionally, organizations using affected versions of Windows 10, Windows 11, and Windows Server should prioritize patching and monitoring.

Technical summary

The CVE-2026-62782 vulnerability is an out-of-bounds read issue in the Windows SMB Client. This could allow an attacker to disclose sensitive information over the network. The vulnerability has a CVSS score of 6.5 and is classified as medium severity. Affected products include various versions of Windows 10, Windows 11, and Windows Server.

Defensive priority

Medium-priority defensive actions are recommended due to the CVSS score of 6.5 and the potential for information disclosure.

Recommended defensive actions

• Apply the vendor patch as described in the Microsoft advisory
• Implement compensating controls such as network segmentation and access controls
• Monitor for suspicious SMB client activity
• Verify and update Windows SMB Client configurations
• Perform regular vulnerability scans and inventory checks

Evidence notes

The CVE-2026-62782 record indicates an out-of-bounds read vulnerability in the Windows SMB Client, which could allow an unauthorized attacker to disclose information over a network. Evidence is based on official CVE and NVD records, as well as a vendor advisory from Microsoft.

Official resources