CVE-2018-8421

CRITICAL

Microsoft .NET Framework - Remote Code Execution via Untrusted Input

Title source: llm

Description

A remote code execution vulnerability exists when Microsoft .NET Framework processes untrusted input, aka ".NET Framework Remote Code Execution Vulnerability." This affects Microsoft .NET Framework 4.6, Microsoft .NET Framework 3.5, Microsoft .NET Framework 4.7/4.7.1/4.7.2, Microsoft .NET Framework 3.0, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2, Microsoft .NET Framework 4.5.2, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2, Microsoft .NET Framework 4.7.1/4.7.2, Microsoft .NET Framework 4.7.2, Microsoft .NET Framework 2.0.

References (3)

Core 3

Core References

Patch, Vendor Advisory x_refsource_confirm

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8421

Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack

http://www.securitytracker.com/id/1041636

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/105222

Scores

CVSS v3 9.8

EPSS 0.2891

EPSS Percentile 97.9%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-20

Status published

Products (11)

microsoft/.net_framework 2.0 sp2

microsoft/.net_framework 3.0 sp2

microsoft/.net_framework 3.5

microsoft/.net_framework 3.5.1

microsoft/.net_framework 4.5.2

microsoft/.net_framework 4.6

microsoft/.net_framework 4.6.2

microsoft/.net_framework 4.7

microsoft/.net_framework 4.7.1

microsoft/.net_framework 4.7.2

... and 1 more

Published Sep 13, 2018

Tracked Since Feb 18, 2026