CVE-2026-62799: Windows SMB Client Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.
Other sources
Windows SMB Client Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.2704Patch KB5121000
Event History
Frequently Asked Questions
What is the severity of CVE-2026-62799?
The severity of CVE-2026-62799 is classified as high with a CVSS score of 7.8.
How do I fix CVE-2026-62799?
To fix CVE-2026-62799, apply the latest security updates provided by Microsoft for Windows SMB Client.
What impact does CVE-2026-62799 have on my system?
CVE-2026-62799 allows an authorized attacker to elevate privileges locally, potentially leading to unauthorized access.
Is my version of Microsoft Windows affected by CVE-2026-62799?
Yes, CVE-2026-62799 specifically affects Microsoft Windows 11.
What type of vulnerability is CVE-2026-62799?
CVE-2026-62799 is classified as a heap-based buffer overflow vulnerability.