Home/CVE/Improper input validation in Windows Active Directory allows an authorized attacker to execute code over an adjacent net
CVE

CVE-2026-33826

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

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

HIGH · CVSS 8 EPSS 0.00932
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
▤

Affected Products & Versions

6
microsoft windows server 2012all versions
microsoft windows server 2016< 10.0.14393.9060
microsoft windows server 2019< 10.0.17763.8644
microsoft windows server 2022< 10.0.20348.5020
microsoft windows server 2022 23h2< 10.0.25398.2274
microsoft windows server 2025< 10.0.26100.32690
▣

Scoring & Timeline

8
HIGH · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 Apr 2026 · 06:17 PM
CVSS VectorCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
msrcCVE-2026-33826Remote Code Execution
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