CVE-2026-119938
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Heap-based Buffer Overflow in Windows Shell
Vulnerability report for CVE-2026-119938, 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 Windows Shell 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 10.0.14393.9688 (exc) |
| Microsoft | Windows 10 Version 1809 | From 10.0.17763.0 (inc) to 10.0.17763.9487 (exc) |
| Microsoft | Windows 10 Version 21H2 | From 10.0.19044.0 (inc) to 10.0.19044.7846 (exc) |
| Microsoft | Windows 10 Version 22H2 | From 10.0.19045.0 (inc) to 10.0.19045.7846 (exc) |
| Microsoft | Windows 11 version 23H2 | From 10.0.22631.0 (inc) to 10.0.22631.7711 (exc) |
| Microsoft | Windows 11 Version 23H2 | From 10.0.22631.0 (inc) to 10.0.22631.7711 (exc) |
| Microsoft | Windows 11 Version 24H2 | From 10.0.26100.0 (inc) to 10.0.26100.9974 (exc) |
| Microsoft | Windows 11 Version 25H2 | From 10.0.26200.0 (inc) to 10.0.26200.9974 (exc) |
| Microsoft | Windows 11 version 26H1 | From 10.0.28000.0 (inc) to 10.0.28000.3501 (exc) |
| Microsoft | Windows 11 Version 26H2 | From 10.0.26300.0 (inc) to 10.0.26300.9974 (exc) |
| Microsoft | Windows Server 2016 | From 10.0.14393.0 (inc) to 10.0.14393.9688 (exc) |
| Microsoft | Windows Server 2016 (Server Core installation) | From 10.0.14393.0 (inc) to 10.0.14393.9688 (exc) |
| Microsoft | Windows Server 2019 | From 10.0.17763.0 (inc) to 10.0.17763.9487 (exc) |
| Microsoft | Windows Server 2019 (Server Core installation) | From 10.0.17763.0 (inc) to 10.0.17763.9487 (exc) |
| Microsoft | Windows Server 2022 | From 10.0.20348.0 (inc) to 10.0.20348.5870 (exc) |
| Microsoft | Windows Server 2025 | From 10.0.26100.0 (inc) to 10.0.26100.33822 (exc) |
| Microsoft | Windows Server 2025 (Server Core installation) | From 10.0.26100.0 (inc) to 10.0.26100.33822 (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(). |
