CVE-2026-34342: Windows Print Spooler Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
Other sources
Windows Print Spooler Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
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Fixed in 10.0.25398.2330Patch KB5087541 - Upgrade
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Fixed in 10.0.28000.2113Patch KB5089548 - Upgrade
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Fixed in 10.0.26100.8457Fixed in 10.0.26100.8390Patch KB5089466 - Upgrade
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Fixed in 10.0.26100.32860Fixed in 10.0.26100.32772Patch KB5087423 - Upgrade
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Fixed in 10.0.14393.9140Patch KB5087537 - Upgrade
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Fixed in 10.0.22631.7219Patch KB5093998 - Upgrade
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Fixed in 10.0.22631.7079Patch KB5087420 - Upgrade
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Fixed in 10.0.26200.8457Fixed in 10.0.26200.8390Patch KB5089466 - Upgrade
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Fixed in 10.0.19045.7417Patch KB5094127 - Upgrade
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Fixed in 6.3.9600.23181Patch KB5087471 - Upgrade
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Fixed in 6.2.9200.26079Patch KB5087470 - Upgrade
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Fixed in 10.0.19044.7291Patch KB5087544 - Upgrade
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Fixed in 10.0.17763.8755Patch KB5087538 - Upgrade
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Fixed in 10.0.20348.5139Fixed in 10.0.20348.5074Patch KB5087424
Event History
Frequently Asked Questions
What is the severity of CVE-2026-34342?
CVE-2026-34342 has a medium severity rating due to its potential for privilege escalation by authorized attackers.
How do I fix CVE-2026-34342?
To resolve CVE-2026-34342, apply the relevant security updates provided by Microsoft for affected Windows versions.
What versions of Windows are affected by CVE-2026-34342?
CVE-2026-34342 impacts multiple versions of Windows, including Windows Server 2016, Windows 10, and Windows 11 among others.
Can CVE-2026-34342 be exploited remotely?
CVE-2026-34342 requires local access for exploitation, limiting its remote attack vectors.
What type of vulnerability is CVE-2026-34342?
CVE-2026-34342 is an elevation of privilege vulnerability caused by improper synchronization within the Windows Print Spooler.