What is the CVSS score of CVE-2026-25177?

CVE-2026-25177 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Windows 11 23h2 are affected by CVE-2026-25177?

CVE-2026-25177 is a privilege escalation vulnerability in Active Directory Domain Services that allows authorized network users to gain elevated permissions without administrative action.. A patch is available.

How to fix or mitigate CVE-2026-25177?

Within 24 hours: Inventory all AD Domain Services deployments and identify systems running vulnerable versions; notify network and identity teams to increase monitoring for suspicious privilege escalation activity. Within 7 days: Implement network segmentation to restrict lateral movement from standard user accounts to sensitive AD infrastructure; review and enforce strict AD object naming policies to limit resource name manipulation. Within 30 days: Establish vendor communication channels for patch availability timelines; evaluate workarounds such as disabling unnecessary file resource naming features in AD if operationally feasible; conduct security assessment of user privilege levels across the domain.

Windows 11 23h2 CVE-2026-25177

HIGH

Improper Restriction of Names for Files and Other Resources (CWE-641)

2026-03-10 secure@microsoft.com

Information Disclosure Windows 11 23h2 Windows 11 26h1 Windows Server 2025 Windows 10 22h2 Windows Server 2016 Windows 10 1809 Windows Server 2019 Windows 10 21h2 Windows Server 2022 23h2 Windows Server 2012 Windows 11 24h2 Windows 10 1607 Windows Server 2022 Windows 11 25h2 Microsoft

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

CVE Published

Mar 10, 2026 - 18:18 nvd

HIGH 8.8

DescriptionCVE.org

Improper restriction of names for files and other resources in Active Directory Domain Services allows an authorized attacker to elevate privileges over a network.

AnalysisAI

Privilege escalation in Windows Active Directory Domain Services (AD DS) across Windows 11, Windows 10, and Windows Server platforms allows authenticated network attackers to gain elevated privileges by exploiting improper validation of resource naming restrictions. An attacker with valid domain credentials can leverage this vulnerability to escalate their access level without user interaction. Currently, no patch is available, leaving all affected Windows versions vulnerable.

Technical ContextAI

Improper restriction of names for files and other resources in Active Directory Domain Services allows an authorized attacker to elevate privileges over a network.