CVE-2026-83864
mediumImproper access control in Windows NTFS allows an authorized attacker to disclose information locally.
Vendor / product: Microsoft — windows 10 1607
Improper access control in Windows NTFS allows an authorized attacker to disclose information locally.
CVSS
5.5
5.5 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Severity source: NVD CVSS v3.1 (secure@microsoft.com)
Timeline (UTC)
Published: 2026-10-13 19:20
Modified: 2026-10-21 15:32
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 07:00 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
microsoft / windows_10_1607 <10.0.14393.9612
microsoft / windows_10_1809 <10.0.17763.9376
microsoft / windows_10_21h2 <10.0.19044.7807
microsoft / windows_10_22h2 <10.0.19045.7807
microsoft / windows_11_23h2 <10.0.22631.7652
microsoft / windows_11_24h2 <10.0.26100.9711
microsoft / windows_11_25h2 <10.0.26200.9711
microsoft / windows_11_26h1 <10.0.28000.3231
microsoft / windows_11_26h2 <10.0.26300.9711
microsoft / windows_server_2016 <10.0.14393.9612
microsoft / windows_server_2019 <10.0.17763.9376
microsoft / windows_server_2022 <10.0.20348.5761
microsoft / windows_server_2025 <10.0.26100.33650
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83864
Patch / mitigation: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83864
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83864 secure@microsoft.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:00 UTC · record ↗