CVE-2026-123387: Windows Active Directory command injection privilege escalation

CVE-2026-123387 · Severity: high · CVSS 8 · Published 2026-11-10

Windows Active Directory, which manages user identities and access across corporate networks, contains a command injection vulnerability that allows an authenticated attacker to execute arbitrary commands and escalate their privileges. An attacker with valid domain credentials could gain elevated access to critical infrastructure and systems managed by Active Directory.

Technologies: Microsoft Windows Active Directory. Vendors: Microsoft.

Quick answers

Is CVE-2026-123387 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-123387 being exploited in the wild.
How severe is CVE-2026-123387?
High severity, with a CVSS score of 8, published 10 November 2026.
Which products and versions are affected?
Microsoft Windows Active Directory.
Is there a fix for CVE-2026-123387?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-123387 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2026-123387?
Check whether you run Microsoft Windows Active Directory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This is a command injection vulnerability in Windows Active Directory that occurs due to improper neutralization of special elements in commands. An authenticated attacker over a network can craft malicious input to execute arbitrary commands with elevated privileges. The vulnerability requires valid authorization to trigger but enables privilege escalation on the affected system.

Affected products

  • Microsoft Windows Active Directory

Timeline

  • 2026-11-10: disclosed

References

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