Command Injection Vulnerability in Windows Active Directory by Microsoft
CVE-2026-49179

8.8HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1607
Windows 10 Version 1809
Windows 10 Version 21h2
Windows 10 Version 22h2
Vendor
CVE Published:
11 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-49179?

A command injection vulnerability in Windows Active Directory allows an unauthorized attacker to execute arbitrary commands over the network. This security flaw arises from improper handling of special elements within command inputs, potentially leading to unauthorized access and exploitation of system resources.

Affected Version(s)

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.9418

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.9121

Windows 10 Version 21H2 32-bit Systems 10.0.19044.0 < 10.0.19044.7663

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-49179-Active-Directory-WriteSPNScript-Command-Injection
Created by overgrowncarrot1

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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