CVE-2018-8431

Name: CVE-2018-8431
Creator: NVD / NIST
Published: 2018-09-13T00:29:03.41+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.25%

Last modified Jun 17, 2026

CVE-2018-8431 is a vulnerability of currently unknown severity. An elevation of privilege vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server, aka "Microsoft SharePoint Elevation of Privilege Vulnerability." This affects Microsoft SharePoint Server, Microsoft SharePoint. This CVE ID is unique from CVE-2018-8428.. EPSS estimates a 2.25% chance of exploitation in the next 30 days.

Description

An elevation of privilege vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server, aka "Microsoft SharePoint Elevation of Privilege Vulnerability." This affects Microsoft SharePoint Server, Microsoft SharePoint. This CVE ID is unique from CVE-2018-8428.

Metrics

EPSS Probability

2.25%

80.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions	Update
Microsoft	Sharepoint Enterprise Server	2013	Sp1
Microsoft	Sharepoint Enterprise Server	2016	—
Microsoft	Sharepoint Server	2010	Sp2

References

http://www.securityfocus.com/bid/105221Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041639Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8431Patch, Vendor Advisory
http://www.securityfocus.com/bid/105221Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041639Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8431Patch, Vendor Advisory

Timeline

Published: Sep 13, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-8431?

How severe is CVE-2018-8431?

Severity scoring for CVE-2018-8431 is pending analysis. The EPSS model estimates a 2.25% probability of exploitation in the next 30 days.

How do I fix CVE-2018-8431?

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-2018-8431?

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

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Source: NVD / NIST