Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.

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Fixes

Solution

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Workaround

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History

Wed, 12 Aug 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 11 Aug 2026 17:15:00 +0000

Type Values Removed Values Added
Description Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.
Title Windows SMB Client Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft windows 11 26h1
Weaknesses CWE-122
CPEs cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*
Vendors & Products Microsoft
Microsoft windows 11 26h1
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-08-12T14:49:23.467Z

Reserved: 2026-07-14T21:08:07.965Z

Link: CVE-2026-62799

cve-icon Vulnrichment

Updated: 2026-08-12T13:44:33.248Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-08-11T17:18:34.180

Modified: 2026-08-12T14:18:21.423

Link: CVE-2026-62799

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-12T13:45:03Z

Weaknesses