CVE-2026-20817

HighCVSS 7.8/10Last modified Jul 30, 2026

Description

Improper handling of insufficient permissions or privileges in Windows Error Reporting 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-280

Affected software

VendorProductVersions
MicrosoftWindows 10 Version 21H2>= 10.0.19044.0, < 10.0.19044.6809
MicrosoftWindows 10 Version 22H2>= 10.0.19045.0, < 10.0.19045.6809
MicrosoftWindows 11 version 23H2>= 10.0.22631.0, < 10.0.22631.6491
MicrosoftWindows 11 Version 23H2>= 10.0.22631.0, < 10.0.22631.6491
MicrosoftWindows 11 Version 24H2>= 10.0.26100.0, < 10.0.26100.7623
MicrosoftWindows 11 Version 25H2>= 10.0.26200.0, < 10.0.26200.7623
MicrosoftWindows Server 2022>= 10.0.20348.0, < 10.0.20348.4648
MicrosoftWindows Server 2022, 23H2 Edition (Server Core installation)>= 10.0.25398.0, < 10.0.25398.2092
MicrosoftWindows Server 2025>= 10.0.26100.0, < 10.0.26100.32230
MicrosoftWindows Server 2025 (Server Core installation)>= 10.0.26100.0, < 10.0.26100.32230

References

Timeline

Published
Jan 13, 2026
Last modified
Jul 30, 2026
NVD status
Modified

Related CVEs from 2026

CVE-2026-208186.2Insertion of sensitive information into log file in Windows Kernel allows an unauthorized attacker to disclose information locally.CVE-2026-208195.5Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to disclose information lCVE-2026-20827.2A vulnerability was identified in D-Link DIR-823X 250416. The impacted element is an unknown function of the file /goform/set_mac_clone. SucCVE-2026-208207.8Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.CVE-2026-208216.2Exposure of sensitive information to an unauthorized actor in Windows Remote Procedure Call allows an unauthorized attacker to disclose infoCVE-2026-208227.8Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.CVE-2026-208235.5Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an authorized attacker to disclose information loCVE-2026-208245.5Protection mechanism failure in Windows Remote Assistance allows an unauthorized attacker to bypass a security feature locally.CVE-2026-208254.4Improper access control in Windows Hyper-V allows an authorized attacker to disclose information locally.CVE-2026-208267.0Concurrent execution using shared resource with improper synchronization ('race condition') in Tablet Windows User Interface (TWINUI) SubsysCVE-2026-208275.5Exposure of sensitive information to an unauthorized actor in Tablet Windows User Interface (TWINUI) Subsystem allows an authorized attackerCVE-2026-208284.6Out-of-bounds read in Windows Internet Connection Sharing (ICS) allows an unauthorized attacker to disclose information with a physical atta
CVE-2026-20817: High severity, CVSS 7.8 | Vulnix