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CVE-2019-0558

19
FAUCET Score

CVE-2019-0558 is a cross-site scripting (XSS) vulnerability in Microsoft SharePoint Server and Microsoft Business Productivity Servers, stemming from improper sanitization of specially crafted web requests. With a CVSS score of 5.4 (MEDIUM), exploitation requires user interaction and low privileges, allowing for low impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code, or Metasploit/Nuclei modules, though it has received some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:business_productivity_servers:2010:sp2:*:*:*:*:*:*
2013CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_server:2013:sp1:*:*:enterprise:*:*:*
2016CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*
2019CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.87%
Probability of exploitation in next 30 days
EPSS Percentile
77.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0187 is in the 96th percentile among its peer group of 15,239 CVEs.

Social Chatter

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

Media Mentions

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

Remediation

Patch Available

Vendor Patches (5)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft SharePoint Enterprise Server 2016
View patch
microsoftpatch availablevia msrc
Product: Microsoft SharePoint Enterprise Server 2013 Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Microsoft Business Productivity Servers 2010 Service Pack 2
View patch
microsoftpatch availablevia msrc
Product: Microsoft SharePoint Server 2019
View patch

Vendor Advisories (1)

microsoft2019-Jan/CVE-2019-0558Important

Microsoft Office SharePoint XSS Vulnerability

Jan 8, 2019

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2019-0558
PatchVendor Advisory
securityfocus.com / bid/106389
Third Party AdvisoryVDB Entry