CVE-2018-8547

Name: CVE-2018-8547
Creator: NVD / NIST
Published: 2018-11-14T01:29:01.037+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.60%

Last modified Jun 17, 2026

CVE-2018-8547 is a vulnerability of currently unknown severity. A cross-site-scripting (XSS) vulnerability exists when an open source customization for Microsoft Active Directory Federation Services (AD FS) does not properly sanitize a specially crafted web request to an affected AD FS server, aka "Active Directory Federation Services XSS Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2019, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers.. EPSS estimates a 1.60% chance of exploitation in the next 30 days.

Description

A cross-site-scripting (XSS) vulnerability exists when an open source customization for Microsoft Active Directory Federation Services (AD FS) does not properly sanitize a specially crafted web request to an affected AD FS server, aka "Active Directory Federation Services XSS Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2019, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers.

Metrics

EPSS Probability

1.60%

72.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Microsoft	Windows 10	1607
Microsoft	Windows 10	1709
Microsoft	Windows 10	1803
Microsoft	Windows 10	1809
Microsoft	Windows 8.1	All versions
Microsoft	Windows Rt 8.1	All versions
Microsoft	Windows Server 2012	r2
Microsoft	Windows Server 2016	All versions
Microsoft	Windows Server 2016	1709
Microsoft	Windows Server 2016	1803
Microsoft	Windows Server 2019	All versions

References

http://www.securityfocus.com/bid/105801Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8547Patch, Vendor Advisory
http://www.securityfocus.com/bid/105801Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8547Patch, Vendor Advisory

Timeline

Published: Nov 14, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-8547?

How severe is CVE-2018-8547?

Severity scoring for CVE-2018-8547 is pending analysis. The EPSS model estimates a 1.60% probability of exploitation in the next 30 days.

How do I fix CVE-2018-8547?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-8547?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST