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CVE-2022-41033: Microsoft Windows COM+ Event System Service Privilege Escalation Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2022-10-11
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-10-11 · updated 2026-06-17
• Weakness: CWE-843

Description

Windows COM+ Event System Service Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 10 Version 1507: before 10.0.10240.19507 — fixed in 10.0.10240.19507
• Microsoft Windows 10 1607: before 10.0.14393.5427 — fixed in 10.0.14393.5427
• Microsoft Windows 10: before 10.0.17763.3532 — fixed in 10.0.17763.3532
• Microsoft Windows 10 20H2: before 10.0.19042.2130 — fixed in 10.0.19042.2130
• Microsoft Windows 10 21H1: before 10.0.19043.2130 — fixed in 10.0.19043.2130
• Microsoft Windows 10: before 10.0.19044.2130 — fixed in 10.0.19044.2130
• Microsoft Windows 11 21H2: before 10.0.22000.1098 — fixed in 10.0.22000.1098
• Microsoft Windows 11: before 10.0.22621.674 — fixed in 10.0.22621.674
• Microsoft Windows 7: all versions
• Microsoft Windows 8.1: all versions
• Microsoft Windows RT 8.1: all versions
• Microsoft Windows Server 2008: r2-sp1
• Microsoft Windows Server 2012: r2
• Microsoft Windows Server 2016: before 10.0.14393.5427 — fixed in 10.0.14393.5427
• Microsoft Windows Server 2019: before 10.0.17763.3532 — fixed in 10.0.17763.3532
• Microsoft Windows Server 2022: before 10.0.20348.1129 — fixed in 10.0.20348.1129

How to fix

Upgrade to a fixed version: Microsoft Windows 10 Version 1507 10.0.10240.19507; Microsoft Windows 10 1607 10.0.14393.5427; Microsoft Windows 10 10.0.17763.3532; Microsoft Windows 10 20H2 10.0.19042.2130; Microsoft Windows 10 21H1 10.0.19043.2130; Microsoft Windows 10 10.0.19044.2130; Microsoft Windows 11 21H2 10.0.22000.1098; Microsoft Windows 11 10.0.22621.674; Microsoft Windows Server 2016 10.0.14393.5427; Microsoft Windows Server 2019 10.0.17763.3532; Microsoft Windows Server 2022 10.0.20348.1129. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-41033
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-41033
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-41033

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