HarborGuard / CVE
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HIGHCVE-2026-33826Published Modified CNA microsoft

CVE-2026-33826: Windows Active Directory Remote Code Execution Vulnerability

Improper input validation in Windows Active Directory allows an authorized attacker to execute code over an adjacent network.

Metrics

CVSS v3.1
8.0
Severity
HIGH
Fixed in
6.3.9600.23132
Affected Products
10

Fix available

6.3.9600.2313210.0.14393.906010.0.17763.864410.0.20348.502010.0.25398.227410.0.26100.32690
Patch commits
Affected packages
  • Microsoft / Windows Server 2012 R2
    < 6.3.9600.23132 (from 6.3.9600.0)
  • Microsoft / Windows Server 2012 R2 (Server Core installation)
    < 6.3.9600.23132 (from 6.3.9600.0)
  • Microsoft / Windows Server 2016
    < 10.0.14393.9060 (from 10.0.14393.0)
  • Microsoft / Windows Server 2016 (Server Core installation)
    < 10.0.14393.9060 (from 10.0.14393.0)
  • Microsoft / Windows Server 2019
    < 10.0.17763.8644 (from 10.0.17763.0)
  • Microsoft / Windows Server 2019 (Server Core installation)
    < 10.0.17763.8644 (from 10.0.17763.0)
  • Microsoft / Windows Server 2022
    < 10.0.20348.5020 (from 10.0.20348.0)
  • Microsoft / Windows Server 2022, 23H2 Edition (Server Core installation)
    < 10.0.25398.2274 (from 10.0.25398.0)
  • Microsoft / Windows Server 2025
    < 10.0.26100.32690 (from 10.0.26100.0)
  • Microsoft / Windows Server 2025 (Server Core installation)
    < 10.0.26100.32690 (from 10.0.26100.0)
CVSS Vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References