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Severe, 6 weeks977Projects326

977 severe, 6 weeks · 326 projects

MicrosoftCVE-2026-83657

Microsoft Windows: tampering

Microsoft

CVE-2026-83657 · Published Oct 13, 2026 · updated Oct 29, 2026

Medium5.5
Fix: upgrade to 10.0.17763.9376 or later (3 fixed versions below)
Microsoft advisory

Weak authentication in Windows Modern Device Management (MDM) allows an authorized attacker to perform tampering locally.

Affected versions

PackageAffectedFixed in
Windows 10 Version 1809
Product
>= 10.0.17763.0, < 10.0.17763.937610.0.17763.9376
Windows Server 2019
Product
>= 10.0.17763.0, < 10.0.17763.937610.0.17763.9376
Windows Server 2019 (Server Core installation)
Product
>= 10.0.17763.0, < 10.0.17763.937610.0.17763.9376
Details and references
CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-1390

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