Description
Use after free in Content Delivery Manager allows an authorized attacker to elevate privileges locally.
Published: 2026-07-14
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability is a use‑after‑free condition in the Windows Content Delivery Manager. An attacker who is already authorized on the system can trigger the flaw and gain elevated local privileges. The weakness corresponds to a race condition and memory safety error, allowing the attacker to alter program flow and perform actions normally restricted to higher privilege accounts.

Affected Systems

Microsoft Windows 10 versions 1809, 21H2, and 22H2; Microsoft Windows 11 versions 24H2, 25H2, and 26H1; Microsoft Windows Server 2019 (including Server Core); and Microsoft Windows Server 2025 (including Server Core).

Risk and Exploitability

The CVSS score of 7.8 indicates a high severity with potential for full local privilege escalation. However, the EPSS score is below 1 %, implying a very low probability of observed exploitation in the wild, and the vulnerability is not listed in the CISA KEV catalog. The likely attack vector is a local attacker with sufficient authorization who can exploit the use‑after‑free in the Content Delivery Manager to elevate privileges.

Generated by OpenCVE AI on July 31, 2026 at 07:57 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Install the latest Microsoft security update that addresses CVE‑2026‑50427 (check the MSRC update guide for the specific cumulative update or security bulletin).
  • If applying the patch is delayed, restrict or revoke the user’s rights to access or run the Content Delivery Manager service, reducing the attack surface for an authorized attacker.
  • As a temporary containment measure, disable or stop the Content Delivery Manager service if the functionality is not required for the system’s role.

Generated by OpenCVE AI on July 31, 2026 at 07:57 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 15 Jul 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Tue, 14 Jul 2026 17:45:00 +0000

Type Values Removed Values Added
Description Use after free in Content Delivery Manager allows an authorized attacker to elevate privileges locally.
Title Content Delivery Manager Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft windows 10 1809
Microsoft windows 10 21h2
Microsoft windows 10 22h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows Server 2019
Microsoft windows Server 2025
Weaknesses CWE-362
CWE-416
CPEs cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft windows 10 1809
Microsoft windows 10 21h2
Microsoft windows 10 22h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows Server 2019
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 1809 Windows 10 21h2 Windows 10 22h2 Windows 11 24h2 Windows 11 25h2 Windows 11 26h1 Windows Server 2019 Windows Server 2025
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-08-03T22:55:38.529Z

Reserved: 2026-06-04T18:57:47.375Z

Link: CVE-2026-50427

cve-icon Vulnrichment

Updated: 2026-07-15T14:16:57.434Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-31T08:00:04Z

Weaknesses
  • CWE-362

    Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

  • CWE-416

    Use After Free