CVE-2019-1365

Severity: critical (CVSS 9.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-10-10 · updated 2026-06-17

Description

An elevation of privilege vulnerability exists when Microsoft IIS Server fails to check the length of a buffer prior to copying memory to it.An attacker who successfully exploited this vulnerability can allow an unprivileged function ran by the user to execute code in the context of NT AUTHORITY\system escaping the Sandbox.The security update addresses the vulnerability by correcting how Microsoft IIS Server sanitizes web requests., aka 'Microsoft IIS Server Elevation of Privilege Vulnerability'.

Affected products

Microsoft Windows 10 Version 1607: 1607, 1803, 1809, 1903
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: 1803, 1903
Microsoft Windows Server 2019: all versions
Microsoft Corporation Windows: 7 for 32-bit Systems Service Pack 1, 7 for x64-based Systems Service Pack 1, 8.1 for 32-bit systems, 8.1 for x64-based systems, RT 8.1, 10 Version 1607 for 32-bit Systems (+7)
Microsoft Windows 10 Version 1903 for 32-bit Systems: all versions
Microsoft Windows 10 Version 1903 for ARM64-based Systems: all versions
Microsoft Windows 10 Version 1903 for x64-based Systems: all versions
Microsoft Windows Server: 2008 R2 for x64-based Systems Service Pack 1 (Core installation), 2008 R2 for Itanium-Based Systems Service Pack 1, 2008 R2 for x64-based Systems Service Pack 1, 2008 for 32-bit Systems Service Pack 2 (Core installation), 2012, 2012 (Core installation) (+11)
Microsoft Windows Server, version 1903 (Server Core installation): all versions

References

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