Critical EPSS 0.99913 2019-02 archive

Executive Summary

A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the SharePoint application pool and the SharePoint server farm account. Exploitation of this vulnerability requires that a user uploads a specially crafted SharePoint application package to an affected version of SharePoint. The security update addresses the vulnerability by correcting how SharePoint checks the source markup of application packages.

Overview

Critical
MS Severity
Not Exploited
MS Exploit Status
More Likely
MS Exploit Likelihood
Category Remote Code Execution
Released Feb 12 2019
Last Updated Feb 12 2019
Publicly Disclosed No
CISA KEV Listed (added 2021-11-03)
Known Exploits None Known
EPSS Score 0.99913 — 0.99966 percentile

EPSS Score

0.99913
probability of exploitation in the next 30 days
0.99966 percentile - updated 2026-06-20
View on FIRST.org

Affected Products

6 affected products
Product KB Article Severity Impact Restart Required
Microsoft SharePoint Enterprise Server 2016 4462211 (Security Update) Critical Remote Code Execution Maybe
Microsoft SharePoint Foundation 2010 Service Pack 2 4461630 (Security Update) Critical Remote Code Execution Maybe
Microsoft SharePoint Foundation 2013 Service Pack 1 4462143 (Security Update) Critical Remote Code Execution Maybe
Microsoft SharePoint Server 2010 Service Pack 2 4462184 (Security Update) 4461630 (Security Update) Critical Remote Code Execution Maybe
Microsoft SharePoint Server 2013 Service Pack 1 4462202 (Security Update) 4462143 (Security Update) Critical Remote Code Execution Maybe
Microsoft SharePoint Server 2019 4462199 (Security Update) Critical Remote Code Execution Maybe

Patches

6 patches
Article Type Restart
4462211 Security Update Maybe
4461630 Security Update Maybe
4462143 Security Update Maybe
4462184 (Security Update) 4461630 Security Update Maybe
4462202 (Security Update) 4462143 Security Update Maybe
4462199 Security Update Maybe

Known Exploits