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Vulnerability record · CVE-2018-8300 · published 11 July 2018

CVE-2018-8300: Microsoft sharepoint enterprise server improper input validation vulnerability

Microsoft · Sharepoint Enterprise Server

A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package, aka "Microsoft SharePoint Remote Code Execution Vulnerability." This affects Microsoft SharePoint.

8.8 CVSS 3.0 High EPSS 14% · top 3.7% CWE-20 · Improper input validation
8.8CVSS 3.0 base score, v2 6.5
14%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package, aka "Microsoft SharePoint Remote Code Execution Vulnerability." This affects Microsoft SharePoint.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/104614 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1041261 Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8300 PatchVendor Advisory
http://www.securityfocus.com/bid/104614 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1041261 Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8300 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2019-0604Microsoft SharePoint application package markup validation RCEMicrosoft SharePoint fails to validate the source markup of an application package, allowing crafted packages to execute code on the server. This is …KEVEPSS 100%analysed7.8CVE-2020-1147Microsoft .NET Framework, SharePoint, and Visual Studio XML Deserialization RCEThe software fails to check the source markup of XML input, allowing crafted XML to trigger unsafe deserialization and remote code execution. It affe…KEVEPSS 94%analysed7.8CVE-2017-11826Microsoft Office memory corruption allows remote code executionMicrosoft Office, Word, SharePoint, Office Web Apps and related products fail to properly handle objects in memory, a buffer overflow (CWE-119) that …KEVEPSS 81%analysed7.2CVE-2023-24955Microsoft SharePoint Server code injection enables remote code executionCVE-2023-24955 is a code injection flaw (CWE-94) in Microsoft SharePoint Server and SharePoint Enterprise Server that allows remote code execution. I…KEVEPSS 85%analysed6.5CVE-2025-49706Microsoft SharePoint improper authentication enables spoofingMicrosoft SharePoint Server and SharePoint Enterprise Server contain an improper authentication flaw (CWE-287) that lets an unauthorized attacker per…KEVEPSS 99%analysed9.9CVE-2020-1595Microsoft sharepoint enterprise server download of code without integrity check vulnerability<p>A remote code execution vulnerability exists in Microsoft SharePoint where APIs aren't properly protected from unsafe data input. An attacker who …EPSS 2.0%9.9CVE-2020-1210Microsoft sharepoint enterprise server download of code without integrity check vulnerability<p>A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package.…EPSS 1.9%9.8CVE-2023-21716Microsoft Word integer overflow remote code executionCVE-2023-21716 is a critical remote code execution flaw in Microsoft Word, tied to an integer overflow (CWE-190). The record gives only a one-line de…EPSS 85%analysed

Source: NIST National Vulnerability Database (record CVE-2018-8300), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.