CVE-2018-8540

42

FAUCET Score

CVE-2018-8540 is a critical remote code execution vulnerability in multiple versions of the Microsoft .NET Framework, affecting various Windows operating systems. This flaw stems from improper input validation, allowing an unauthenticated attacker to execute arbitrary code with high impact on confidentiality, integrity, and availability. While it has a CVSS score of 9.8 and a high FAUCET Risk Score of 93/100, there is no public exploit code available in common repositories like Metasploit or ExploitDB, and it is not listed in the CISA KEV catalog. Despite this, it received some media coverage and community discussion at the time of its disclosure.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		3.5CPE matchmatch criteria	cpe:2.3:a:microsoft:.net_framework:3.5:::::::*
		3.5CPE matchmatch criteria	cpe:2.3:a:microsoft:.net_framework:3.5:sp1::::::
		3.5.1CPE matchmatch criteria	cpe:2.3:a:microsoft:.net_framework:3.5.1:::::::*
		4.5.2CPE matchmatch criteria	cpe:2.3:a:microsoft:.net_framework:4.5.2:::::::*
		4.6.2CPE matchmatch criteria	cpe:2.3:a:microsoft:.net_framework:4.6.2:::::::*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

Exploitability Score

3.9

Impact Score

5.9

CvssVersion

3.0

Exploit Intelligence

EPSS Score

22.13%

Probability of exploitation in next 30 days

EPSS Percentile

97.4%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.2213 is in the 94th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (151)

microsoftpatch availablevia nvd_reference

microsoftpatch availablevia msrc

Product: 11513-11497

microsoftpatch availablevia msrc

Product: 11513-11498

microsoftpatch availablevia msrc

Product: 11513-11499

microsoftpatch availablevia msrc

Product: 11529-10047

microsoftpatch availablevia msrc

Product: 11529-10048

microsoftpatch availablevia msrc

Product: 11529-10481

microsoftpatch availablevia msrc

Product: 11529-10482

microsoftpatch availablevia msrc

Product: 11529-10484

microsoftpatch availablevia msrc

Product: 11529-10051

microsoftpatch availablevia msrc

Product: 11529-10049

microsoftpatch availablevia msrc

Product: 11529-10378

microsoftpatch availablevia msrc

Product: 11529-10379

microsoftpatch availablevia msrc

Product: 11529-10483

microsoftpatch availablevia msrc

Product: 11529-10543

microsoftpatch availablevia msrc

Product: 11532-10852

microsoftpatch availablevia msrc

Product: 11532-10853

microsoftpatch availablevia msrc

Product: 11532-10816

microsoftpatch availablevia msrc

Product: 11532-10855

microsoftpatch availablevia msrc

Product: 11534-10951

microsoftpatch availablevia msrc

Product: 11534-10952

microsoftpatch availablevia msrc

Product: 11535-11453

microsoftpatch availablevia msrc

Product: 11535-11454

microsoftpatch availablevia msrc

Product: 11535-11466

microsoftpatch availablevia msrc

Product: 10728-9312

microsoftpatch availablevia msrc

Product: 10728-9318

microsoftpatch availablevia msrc

Product: 10900-10729

microsoftpatch availablevia msrc

Product: 10900-10735

microsoftpatch availablevia msrc

Product: 2472-10951

microsoftpatch availablevia msrc

Product: 2472-10952

microsoftpatch availablevia msrc

Product: 2472-11497

microsoftpatch availablevia msrc

Product: 2472-11498

microsoftpatch availablevia msrc

Product: 2472-11499

microsoftpatch availablevia msrc

Product: 2472-11453

microsoftpatch availablevia msrc

Product: 2472-11454

microsoftpatch availablevia msrc

Product: 2472-11466

microsoftpatch availablevia msrc

Product: 2472-10729

microsoftpatch availablevia msrc

Product: 2472-10735

microsoftpatch availablevia msrc

Product: 2472-10852

microsoftpatch availablevia msrc

Product: 2472-10853

microsoftpatch availablevia msrc

Product: 2472-10816

microsoftpatch availablevia msrc

Product: 2472-10855

microsoftpatch availablevia msrc

Product: 2472-10481

microsoftpatch availablevia msrc

Product: 2472-10482

microsoftpatch availablevia msrc

Product: 2472-10378

microsoftpatch availablevia msrc

Product: 2472-10379

microsoftpatch availablevia msrc

Product: 2472-10483

microsoftpatch availablevia msrc

Product: 2472-10543

microsoftpatch availablevia msrc

Product: 7683-9312

microsoftpatch availablevia msrc

Product: 7683-9318

microsoftpatch availablevia msrc

Product: 9495-10047

microsoftpatch availablevia msrc

Product: 9495-10048

microsoftpatch availablevia msrc

Product: 9495-10051

microsoftpatch availablevia msrc

Product: 9495-10049

microsoftpatch availablevia msrc

Product: 10636-10047

microsoftpatch availablevia msrc

Product: 10636-10048

microsoftpatch availablevia msrc

Product: 10636-10481

microsoftpatch availablevia msrc

Product: 10636-10482

microsoftpatch availablevia msrc

Product: 10636-10484

microsoftpatch availablevia msrc

Product: 10636-9312

microsoftpatch availablevia msrc

Product: 10636-9318

microsoftpatch availablevia msrc

Product: 10636-10051

microsoftpatch availablevia msrc

Product: 10636-10049

microsoftpatch availablevia msrc

Product: 10636-10378

microsoftpatch availablevia msrc

Product: 10636-10379

microsoftpatch availablevia msrc

Product: 10636-10483

microsoftpatch availablevia msrc

Product: 10636-10543

microsoftpatch availablevia msrc

Product: 11513-11572

microsoftpatch availablevia msrc

Product: 2472-11568

microsoftpatch availablevia msrc

Product: 11513-11569

microsoftpatch availablevia msrc

Product: 2472-11571

microsoftpatch availablevia msrc

Product: 11513-11571

microsoftpatch availablevia msrc

Product: 2472-11569

microsoftpatch availablevia msrc

Product: 2472-11572

microsoftpatch availablevia msrc

Product: 11513-11568

microsoftpatch availablevia msrc

Product: 11535-11583

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.7.2 on Windows 10 Version 1803 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.7.2 on Windows 10 Version 1803 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.7.2 on Windows Server, version 1803 (Server Core Installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 7 for 32-bit Systems Service Pack 1

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 7 for x64-based Systems Service Pack 1

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 8.1 for 32-bit systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 8.1 for x64-based systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows RT 8.1

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.7/4.7.1/4.7.2 on Windows 10 Version 1703 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.7/4.7.1/4.7.2 on Windows 10 Version 1703 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.7.1/4.7.2 on Windows 10 Version 1709 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.7.1/4.7.2 on Windows Server, version 1709 (Server Core Installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6 on Windows Server 2008 for 32-bit Systems Service Pack 2

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6 on Windows Server 2008 for x64-based Systems Service Pack 2

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6.2 on Windows 10 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.6.2 on Windows 10 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server, version 1803 (Server Core Installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server, version 1709 (Server Core Installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server 2016

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server 2016 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server 2012

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server 2012 R2

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 Service Pack 1 on Windows Server 2008 for 32-bit Systems Service Pack 2

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 Service Pack 1 on Windows Server 2008 for x64-based Systems Service Pack 2

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.5.2 on Windows 7 for 32-bit Systems Service Pack 1

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.5.2 on Windows 7 for x64-based Systems Service Pack 1

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.5.2 on Windows 8.1 for 32-bit systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.5.2 on Windows 8.1 for x64-based systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.5.2 on Windows RT 8.1

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.5.2 on Windows Server 2008 for 32-bit Systems Service Pack 2

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.5.2 on Windows Server 2008 for x64-based Systems Service Pack 2

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.5.2 on Windows Server 2012

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.5.2 on Windows Server 2012 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.7.2 on Windows Server 2019 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1809 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.7.2 on Windows 10 Version 1809 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server 2019

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.7.2 on Windows Server 2019

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1809 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server 2019 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.7.2 on Windows 10 Version 1809 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 4.7.1/4.7.2 on Windows 10 Version 1709 for ARM64-based Systems

Vendor Advisories (1)

microsoft2018-Dec/CVE-2018-8540Critical

.NET Framework Remote Code Execution Injection Vulnerability

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-8540

PatchVendor Advisory

securityfocus.com / bid/106073

Third Party AdvisoryVDB Entry