CVE-2019-0558

Name: CVE-2019-0558
Creator: NVD / NIST
Published: 2019-01-08T21:29:01.127+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 2.00%

Last modified Jun 17, 2026

CVE-2019-0558 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. A cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server, aka "Microsoft Office SharePoint XSS Vulnerability." This affects Microsoft SharePoint Server, Microsoft SharePoint, Microsoft Business Productivity Servers. This CVE ID is unique from CVE-2019-0556, CVE-2019-0557.. EPSS estimates a 2.00% chance of exploitation in the next 30 days.

Description

A cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server, aka "Microsoft Office SharePoint XSS Vulnerability." This affects Microsoft SharePoint Server, Microsoft SharePoint, Microsoft Business Productivity Servers. This CVE ID is unique from CVE-2019-0556, CVE-2019-0557.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

2.00%

78.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Microsoft	Business Productivity Servers	2010	Sp2
Microsoft	Sharepoint Server	2013	Sp1
Microsoft	Sharepoint Server	2016	—
Microsoft	Sharepoint Server	2019	—

References

http://www.securityfocus.com/bid/106389Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0558Patch, Vendor Advisory
http://www.securityfocus.com/bid/106389Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0558Patch, Vendor Advisory

Timeline

Published: Jan 8, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-0558?

How severe is CVE-2019-0558?

CVE-2019-0558 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 2.00% probability of exploitation in the next 30 days.

How do I fix CVE-2019-0558?

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-2019-0558?

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

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Source: NVD / NIST