CVE-2026-69963

HighCVSS 7.8/10Last modified Nov 2, 2026

Description

Heap-based buffer overflow in Microsoft Streaming Service allows an authorized attacker to elevate privileges locally.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-122CWE-190

Affected software

VendorProductVersions
MicrosoftWindows 10 Version 1607>= 10.0.14393.0, < 10.0.14393.9612
MicrosoftWindows 10 Version 1809>= 10.0.17763.0, < 10.0.17763.9376
MicrosoftWindows 10 Version 21H2>= 10.0.19044.0, < 10.0.19044.7807
MicrosoftWindows 10 Version 22H2>= 10.0.19045.0, < 10.0.19045.7807
MicrosoftWindows 11 version 23H2>= 10.0.22631.0, < 10.0.22631.7652
MicrosoftWindows 11 Version 23H2>= 10.0.22631.0, < 10.0.22631.7652
MicrosoftWindows 11 Version 24H2>= 10.0.26100.0, < 10.0.26100.9711
MicrosoftWindows 11 Version 25H2>= 10.0.26200.0, < 10.0.26200.9711
MicrosoftWindows 11 version 26H1>= 10.0.28000.0, < 10.0.28000.3231
MicrosoftWindows 11 Version 26H2>= 10.0.26300.0, < 10.0.26300.9711
MicrosoftWindows Server 2012>= 6.2.9200.0, < 6.2.9200.26434
MicrosoftWindows Server 2012 (Server Core installation)>= 6.2.9200.0, < 6.2.9200.26434
MicrosoftWindows Server 2012 R2>= 6.3.9600.0, < 6.3.9600.23470
MicrosoftWindows Server 2012 R2 (Server Core installation)>= 6.3.9600.0, < 6.3.9600.23470
MicrosoftWindows Server 2016>= 10.0.14393.0, < 10.0.14393.9612
MicrosoftWindows Server 2016 (Server Core installation)>= 10.0.14393.0, < 10.0.14393.9612
MicrosoftWindows Server 2019>= 10.0.17763.0, < 10.0.17763.9376
MicrosoftWindows Server 2019 (Server Core installation)>= 10.0.17763.0, < 10.0.17763.9376
MicrosoftWindows Server 2022>= 10.0.20348.0, < 10.0.20348.5761
MicrosoftWindows Server 2025>= 10.0.26100.0, < 10.0.26100.33650
MicrosoftWindows Server 2025 (Server Core installation)>= 10.0.26100.0, < 10.0.26100.33650

References

Timeline

Published
Oct 13, 2026
Last modified
Nov 2, 2026
NVD status
Analyzed

Related CVEs from 2026

CVE-2026-699647.0Use after free in Microsoft Streaming Service allows an authorized attacker to elevate privileges locally.CVE-2026-699667.8Integer overflow or wraparound in Microsoft Streaming Service allows an authorized attacker to elevate privileges locally.CVE-2026-699675.5Out-of-bounds read in Windows Overlay Filter allows an authorized attacker to disclose information locally.CVE-2026-699686.5Relative path traversal in Windows Libarchive allows an unauthorized attacker to perform tampering over a network.CVE-2026-699694.7Improper link resolution before file access ('link following') in Windows AppX Deployment Service allows an authorized attacker to disclose CVE-2026-69972.4A security vulnerability has been detected in BDCOM P3310D 0.4.2 10.1.0F Build 86345. This impacts an unknown function of the component New CVE-2026-699707.0Heap-based buffer overflow in Microsoft Streaming Service allows an authorized attacker to elevate privileges locally.CVE-2026-699715.5Incorrect authorization in Windows Kernel-Mode Drivers allows an authorized attacker to disclose information locally.CVE-2026-699736.5Improper limitation of a pathname to a restricted directory ('path traversal') in Windows Libarchive allows an unauthorized attacker to perfCVE-2026-699744.7Out-of-bounds read in Desktop Window Manager allows an authorized attacker to disclose information locally.CVE-2026-699767.5Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.CVE-2026-699777.0Use after free in Quality Windows Audio/Video Experience (QWAVE) service allows an authorized attacker to elevate privileges locally.
CVE-2026-69963: High severity, CVSS 7.8 | Vulnix