Microsoft Office SharePoint
CVE-2019-1443 — Microsoft SharePoint Information Disclosure Vulnerability
Executive Summary
An information disclosure vulnerability exists in Microsoft SharePoint when an attacker uploads a specially crafted file to the SharePoint Server. An authenticated attacker who successfully exploited this vulnerability could potentially leverage SharePoint functionality to obtain SMB hashes. The security update addresses the vulnerability by correcting how SharePoint checks file content.
Overview
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
EPSS Score
0.0537
probability of exploitation in the next 30 days
0.91616 percentile - updated 2026-06-20
View on FIRST.org
Affected Products
4 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft SharePoint Enterprise Server 2016 | 4484143 (Security Update) |
Important | Information Disclosure | Maybe |
| Microsoft SharePoint Foundation 2010 Service Pack 2 | 4484165 (Security Update) |
Important | Information Disclosure | Maybe |
| Microsoft SharePoint Foundation 2013 Service Pack 1 | 4484157 (Security Update) |
Important | Information Disclosure | Maybe |
| Microsoft SharePoint Server 2019 | 4484142 (Security Update) |
Important | Information Disclosure | Maybe |
Patches
4 patches
| Article | Type | Restart |
|---|---|---|
4484143 |
Security Update | Maybe |
4484165 |
Security Update | Maybe |
4484157 |
Security Update | Maybe |
4484142 |
Security Update | Maybe |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
Saif ElSherei of MSRC Vulnerabilities and Mitigations Team
References
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