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CVE-2022-26791: Windows Print Spooler Elevation of Privilege Vulnerability

• Severity: medium (CVSS 4.6 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-04-15 · updated 2026-06-17

Description

Windows Print Spooler Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 10 Version 1607: 20h2, 21h1, 21h2
• Microsoft Windows Server 2016: 20h2
• Microsoft Windows 10 20H2: from 10.0.0 before 10.0.19042.1645 — fixed in 10.0.19042.1645
• Microsoft Windows 10 21H1: from 10.0.0 before 10.0.19043.1645 — fixed in 10.0.19043.1645
• Microsoft Windows 10: from 10.0.19043.0 before 10.0.19044.1645 — fixed in 10.0.19044.1645
• Microsoft Windows Server version 20H2: from 10.0.0 before 10.0.19042.1645 — fixed in 10.0.19042.1645

How to fix

Upgrade to a fixed version: Microsoft Windows 10 20H2 10.0.19042.1645; Microsoft Windows 10 21H1 10.0.19043.1645; Microsoft Windows 10 10.0.19044.1645; Microsoft Windows Server version 20H2 10.0.19042.1645. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-26791
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-26791

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