Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
Published: 2026-05-12
Score: 7 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

A race condition exists in the Windows Print Spooler components that allows a local user who already has authorized access to execute concurrent operations on a shared resource without proper synchronization. This issue can be exploited by such an attacker to gain higher privileges on the host machine. The weakness is identified as CWE-362, indicating an improper handling of concurrent threads that leads to privilege escalation. The impact flows from unauthorized elevation to full system control, enabling the attacker to compromise confidentiality, integrity, and availability of the affected system.

Affected Systems

Microsoft Windows operating systems including Windows 10 (from version 1607 through 22H2), Windows 11 (all branches such as 23H2, 24H2, 25H2, 26H1 and older releases like 22H3), and Windows Server editions from 2012 up to 2025 plus the Server 23H2 release. All described Server Core installations are also affected.

Risk and Exploitability

The vulnerability carries a CVSS score of 7, reflecting a high severity for local privilege escalation. The EPSS score is not available, so the exact exploitation probability cannot be quantified, but the lack of KEV listing does not diminish the potential risk in environments where local attackers exist. The likely attack vector requires an authorized local user who can execute code that triggers concurrent access to the Print Spooler service. Upon successful exploitation, the attacker can elevate privileges to SYSTEM level, enabling full control over the affected machine.

Generated by OpenCVE AI on May 12, 2026 at 18:50 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the latest Windows update that contains the Print Spooler fix from Microsoft. This is the most authoritative remediation for affected editions.
  • Restrict user access to the Print Spooler service by applying the principle of least privilege; limit whose accounts have permission to interact with printers and respond to print jobs.
  • If the Print Spooler service is not required in a given environment, disable the service entirely to eliminate the attack surface.

Generated by OpenCVE AI on May 12, 2026 at 18:50 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 12 May 2026 17:30:00 +0000

Type Values Removed Values Added
Description Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
Title Windows Print Spooler Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft windows 10 1607
Microsoft windows 10 1809
Microsoft windows 10 21h2
Microsoft windows 10 22h2
Microsoft windows 11 23h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
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
Microsoft windows Server 23h2
Weaknesses CWE-362
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_10_21H2:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*: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_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:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_23h2:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft windows 10 1607
Microsoft windows 10 1809
Microsoft windows 10 21h2
Microsoft windows 10 22h2
Microsoft windows 11 23h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
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
Microsoft windows Server 23h2
References
Metrics cvssV3_1

{'score': 7, 'vector': 'CVSS:3.1/AV:L/AC:H/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 10 21h2 Windows 10 22h2 Windows 11 23h2 Windows 11 24h2 Windows 11 25h2 Windows 11 26h1 Windows Server 2012 Windows Server 2012 R2 Windows Server 2016 Windows Server 2019 Windows Server 2022 Windows Server 2025 Windows Server 23h2
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-05-13T03:56:35.493Z

Reserved: 2026-03-26T21:02:16.446Z

Link: CVE-2026-34342

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-12T18:17:08.640

Modified: 2026-05-12T18:17:08.640

Link: CVE-2026-34342

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-12T19:00:20Z

Weaknesses