Description
Improper link resolution before file access ('link following') in Windows DHCP Server allows an authorized attacker to elevate privileges locally.
Published: 2026-08-11
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability arises from improper link resolution before file access in the Windows DHCP Server. An attacker with sufficient local privileges can exploit this flaw to read or modify files outside the intended scope, effectively elevating their own privileges. The weakness is a classic path‑traversal flaw (CWE‑59) that can compromise the integrity and confidentiality of the operating system.

Affected Systems

Microsoft Windows 10 (Version 1607 and 1809) and Microsoft Windows Server versions 2012 through 2025, including all Server Core installations, are affected. This includes Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025.

Risk and Exploitability

The CVSS score of 7.8 flags this locally‑executed flaw as high severity, and while the EPSS score is not available, the vulnerability is not listed in CISA's KEV catalog, suggesting no widely known exploits yet. An authorized user on the host can exploit the link‑following error to gain elevated local privileges, granting them the ability to modify system files, install malware, or pivot to other systems. Therefore, the risk is significant for systems where privileged users may execute DHCP Server processes without strict controls.

Generated by OpenCVE AI on August 12, 2026 at 13:33 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the latest Microsoft security update for CVE-2026-62807 (see Microsoft Security Response Center advisory).
  • Restrict DHCP Server service permissions so that only the SYSTEM account, or accounts specifically designated for DHCP, have write access to the service directories and configuration files.
  • Enable detailed file‑access auditing for the DHCP Server directories to detect and respond to unauthorized link following or file modifications.

Generated by OpenCVE AI on August 12, 2026 at 13:33 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Mon, 17 Aug 2026 20:15:00 +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:*:*:*:*:*:*:*

Fri, 14 Aug 2026 13:00:00 +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, 12 Aug 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Tue, 11 Aug 2026 17:15:00 +0000

Type Values Removed Values Added
Description Improper link resolution before file access ('link following') in Windows DHCP Server allows an authorized attacker to elevate privileges locally.
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-59
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': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/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: 2026-08-31T20:07:04.908Z

Reserved: 2026-07-14T21:08:07.966Z

Link: CVE-2026-62807

cve-icon Vulnrichment

Updated: 2026-08-12T13:38:07.567Z

cve-icon NVD

Status : Analyzed

Published: 2026-08-11T17:18:34.730

Modified: 2026-08-17T20:05:16.063

Link: CVE-2026-62807

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-14T12:31:47Z

Weaknesses
  • CWE-59

    Improper Link Resolution Before File Access ('Link Following')