CVE-2018-8493

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-10-10 · updated 2026-06-17

Description

An information disclosure vulnerability exists when the Windows TCP/IP stack improperly handles fragmented IP packets, aka "Windows TCP/IP Information Disclosure Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers.

Affected products

Microsoft Windows 10 Version 1507: all versions
Microsoft Windows 10 1607: all versions
Microsoft Corporation Windows 10 1703: all versions
Microsoft Windows 10 1709: all versions
Microsoft Windows 10 1803: all versions
Microsoft Windows 8.1: all versions
Microsoft Windows Server 1709: all versions
Microsoft Windows Server 1803: all versions
Microsoft Windows Server 2012: r2
Microsoft Windows Server 2016: all versions
Microsoft Windows 10 Version 1607: 32-bit Systems, Version 1607 for 32-bit Systems, Version 1607 for x64-based Systems, Version 1703 for 32-bit Systems, Version 1703 for x64-based Systems, Version 1709 for 32-bit Systems (+4)
Microsoft Windows 10 Servers: version 1709 (Server Core Installation), version 1803 (Server Core Installation)
Microsoft Windows 8.1: 32-bit systems, x64-based systems
Microsoft Windows RT 8.1: Windows RT 8.1
Microsoft Windows Server 2012 R2: (Server Core installation)
Microsoft Windows Server 2016: (Server Core installation)

References

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