CVE-2026-85838
Awaiting Analysis
Awaiting Analysis - Queue
Heap-based Buffer Overflow in Microsoft WDAC OLE DB Provider
Vulnerability report for CVE-2026-85838, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-11-10
Last updated on: 2026-11-10
Assigner: Microsoft Corporation
Description
Description
Heap-based buffer overflow in Microsoft WDAC OLE DB provider for SQL allows an unauthorized attacker to execute code over a network.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Microsoft | Windows 10 Version 1607 | From 10.0.14393.0 (inc) to 10.0.14393.9612 (exc) |
| Microsoft | Windows 10 Version 1809 | From 10.0.17763.0 (inc) to 10.0.17763.9376 (exc) |
| Microsoft | Windows 10 Version 21H2 | From 10.0.19044.0 (inc) to 10.0.19044.7807 (exc) |
| Microsoft | Windows 10 Version 22H2 | From 10.0.19045.0 (inc) to 10.0.19045.7807 (exc) |
| Microsoft | Windows 11 version 23H2 | From 10.0.22631.0 (inc) to 10.0.22631.7652 (exc) |
| Microsoft | Windows 11 Version 23H2 | From 10.0.22631.0 (inc) to 10.0.22631.7652 (exc) |
| Microsoft | Windows 11 Version 24H2 | From 10.0.26100.0 (inc) to 10.0.26100.9711 (exc) |
| Microsoft | Windows 11 Version 25H2 | From 10.0.26200.0 (inc) to 10.0.26200.9711 (exc) |
| Microsoft | Windows 11 version 26H1 | From 10.0.28000.0 (inc) to 10.0.28000.3231 (exc) |
| Microsoft | Windows 11 Version 26H2 | From 10.0.26300.0 (inc) to 10.0.26300.9711 (exc) |
| Microsoft | Windows Server 2012 | From 6.2.9200.0 (inc) to 6.2.9200.26434 (exc) |
| Microsoft | Windows Server 2012 (Server Core installation) | From 6.2.9200.0 (inc) to 6.2.9200.26434 (exc) |
| Microsoft | Windows Server 2012 R2 | From 6.3.9600.0 (inc) to 6.3.9600.23470 (exc) |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | From 6.3.9600.0 (inc) to 6.3.9600.23470 (exc) |
| Microsoft | Windows Server 2016 | From 10.0.14393.0 (inc) to 10.0.14393.9612 (exc) |
| Microsoft | Windows Server 2016 (Server Core installation) | From 10.0.14393.0 (inc) to 10.0.14393.9612 (exc) |
| Microsoft | Windows Server 2019 | From 10.0.17763.0 (inc) to 10.0.17763.9376 (exc) |
| Microsoft | Windows Server 2019 (Server Core installation) | From 10.0.17763.0 (inc) to 10.0.17763.9376 (exc) |
| Microsoft | Windows Server 2022 | From 10.0.20348.0 (inc) to 10.0.20348.5761 (exc) |
| Microsoft | Windows Server 2025 | From 10.0.26100.0 (inc) to 10.0.26100.33650 (exc) |
| Microsoft | Windows Server 2025 (Server Core installation) | From 10.0.26100.0 (inc) to 10.0.26100.33650 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-122 | A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). |
