Description
Missing authentication for critical function in Windows DHCP Server allows an authorized attacker to elevate privileges over a network.
Published: 2026-09-08
Score: 6.8 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Privilege Escalation
Action: Apply Patch
AI Analysis

Impact

The vulnerability is a missing authentication check in a critical function of the Windows DHCP Server, allowing an attacker who can reach the server over a network to elevate privileges. Because the server accepts privileged requests without validating credentials, the attacker can gain higher permissions and potentially take full control of the system. This flaw is classified as CWE‑306.

Affected Systems

Affected systems include Microsoft Windows 10 release 1607 and 1809, and Windows Server releases 2012, 2012 R2, 2016, 2019, 2022, and 2025 (both full and Server Core installations). No specific patch levels are listed, but all versions listed are susceptible until the Microsoft update is applied.

Risk and Exploitability

The CVSS score of 6.8 indicates a moderate risk, and although EPSS data is missing, the absence from the KEV catalog suggests no widespread public exploits yet. The flaw remains exploitable in environments where attackers can reach the DHCP service, such as internal networks or DMZs, and requires the attacker to have basic network connectivity to the server. Once the vulnerable function is invoked without authentication, the attacker can elevate privileges and potentially compromise the entire host.

Generated by OpenCVE AI on September 10, 2026 at 01:48 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the Microsoft security update that addresses the missing authentication in DHCP Server.
  • If a patch is delayed, isolate the DHCP Server from untrusted network segments and restrict DHCP client traffic to known, trusted endpoints.
  • Configure the DHCP Server to deny privileged operations for non‑admin accounts and apply the principle of least privilege to its services.

Generated by OpenCVE AI on September 10, 2026 at 01:48 UTC.

Tracking

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Advisories

No advisories yet.

History

Fri, 11 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 10 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft windows Server 2012 (server Core Installation)
Microsoft windows Server 2012 R2
Microsoft windows Server 2012 R2 (server Core Installation)
Microsoft windows Server 2016 (server Core Installation)
Microsoft windows Server 2019 (server Core Installation)
Microsoft windows Server 2025 (server Core Installation)
Vendors & Products Microsoft windows Server 2012 (server Core Installation)
Microsoft windows Server 2012 R2
Microsoft windows Server 2012 R2 (server Core Installation)
Microsoft windows Server 2016 (server Core Installation)
Microsoft windows Server 2019 (server Core Installation)
Microsoft windows Server 2025 (server Core Installation)

Wed, 09 Sep 2026 15:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*

Tue, 08 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Description Missing authentication for critical function in Windows DHCP Server allows an authorized attacker to elevate privileges over a network.
Title Windows DHCP Server Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft windows 10 1607
Microsoft windows 10 1809
Microsoft windows Server 2012
Microsoft windows Server 2012 R2
Microsoft windows Server 2016
Microsoft windows Server 2019
Microsoft windows Server 2022
Microsoft windows Server 2025
Weaknesses CWE-306
CPEs cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft windows 10 1607
Microsoft windows 10 1809
Microsoft windows Server 2012
Microsoft windows Server 2012 R2
Microsoft windows Server 2016
Microsoft windows Server 2019
Microsoft windows Server 2022
Microsoft windows Server 2025
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}


Subscriptions

Microsoft Windows 10 1607 Windows 10 1809 Windows Server 2012 Windows Server 2012 (server Core Installation) Windows Server 2012 R2 Windows Server 2012 R2 Windows Server 2012 R2 (server Core Installation) Windows Server 2016 Windows Server 2016 (server Core Installation) Windows Server 2019 Windows Server 2019 (server Core Installation) Windows Server 2022 Windows Server 2025 Windows Server 2025 (server Core Installation)
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-09-25T21:31:15.770Z

Reserved: 2026-08-03T20:57:58.964Z

Link: CVE-2026-69415

cve-icon Vulnrichment

Updated: 2026-09-11T13:40:40.566Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-08T18:19:04.393

Modified: 2026-09-24T23:17:48.210

Link: CVE-2026-69415

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-10T21:12:42Z

Weaknesses
  • CWE-306

    Missing Authentication for Critical Function