Description
Use after free in Windows Runtime 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 Windows Runtime that allows an authorized local user to elevate privileges. Exploiting this flaw gives an attacker local administrator rights, operations and potentially install malicious software. The weakness corresponds to CWE‑416, a classic memory corruption error.

Affected Systems

Microsoft Windows 10 Version 21H2, Microsoft Windows 10 Version 22H2, Microsoft Windows 11 Version 24H2, Microsoft Windows 11 Version 25H2, Microsoft Windows 11 Version 26H1, and Microsoft Windows Server 2025 (including Server Core installation).

Risk and Exploitability

The CVSS score of 7.8 indicates a high severity vulnerability, but the EPSS score of less than 1% suggests a low probability of exploitation in the wild. The vulnerability is not listed in the CISA KEV catalog. Attackers would need local or privileged access to the target, and the misuse requires the ability to execute code within the compromised memory region, indicating that local privilege escalation is the primary risk.

Generated by OpenCVE AI on July 31, 2026 at 07:33 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the Microsoft cumulative update that addresses CVE-2026-50486, as available on the Microsoft Security Update Guide.
  • Restart the affected systems to complete the update process.
  • Enable Windows Defender Exploit Guard and ensure Data Execution Prevention and Address Space Layout Randomization are active to provide additional protection against use‑after‑free exploits.

Generated by OpenCVE AI on July 31, 2026 at 07:33 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 14 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 Windows Runtime allows an authorized attacker to elevate privileges locally.
Title Windows Runtime Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft windows 10 21h2
Microsoft windows 10 22h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows Server 2025
Weaknesses CWE-416
CPEs 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_2025:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft windows 10 21h2
Microsoft windows 10 22h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
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 21h2 Windows 10 22h2 Windows 11 24h2 Windows 11 25h2 Windows 11 26h1 Windows Server 2025
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-08-03T22:56:11.435Z

Reserved: 2026-06-04T18:59:53.336Z

Link: CVE-2026-50486

cve-icon Vulnrichment

Updated: 2026-07-14T19:28:16.305Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-31T07:45:12Z

Weaknesses