Advisoriesby IbisMicrosoftCVE-2026-50418
Microsoft Windows System: improper access control
Fix: upgrade to 10.0.26100.8875 or later (5 fixed versions below)
Improper access control in Windows System allows an unauthorized attacker to bypass a security feature locally.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Windows 11 Version 24H2 Product | >= 10.0.26100.0, < 10.0.26100.8875 | 10.0.26100.8875 |
| Windows 11 Version 25H2 Product | >= 10.0.26200.0, < 10.0.26200.8875 | 10.0.26200.8875 |
| Windows 11 version 26H1 Product | >= 10.0.28000.0, < 10.0.28000.2525 | 10.0.28000.2525 |
| Windows Server 2022 Product | >= 10.0.20348.0, < 10.0.20348.5386 | 10.0.20348.5386 |
| Windows Server 2025 Product | >= 10.0.26100.0, < 10.0.26100.33158 | 10.0.26100.33158 |
| Windows Server 2025 (Server Core installation) Product | >= 10.0.26100.0, < 10.0.26100.33158 | 10.0.26100.33158 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-284