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CVE-2018-8300

32
FAUCET Score

CVE-2018-8300 is a remote code execution vulnerability in Microsoft SharePoint Enterprise Server. It arises from the software's failure to properly validate the source markup of application packages. With a CVSS score of 8.8 (HIGH), this vulnerability allows an authenticated attacker to execute arbitrary code remotely with low attack complexity and no user interaction, leading to high impacts on confidentiality, integrity, and availability. While it has a high FAUCET Risk Score of 93/100 and some community discussion, there is no evidence of active exploitation, nor are public exploit modules like Metasploit or ExploitDB available.

Impacted Technologies

VendorProductVersion(s)CPE
2013CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_enterprise_server:2013:sp1:*:*:*:*:*:*
2016CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
12.75%
Probability of exploitation in next 30 days
EPSS Percentile
95.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1275 is in the 95th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft SharePoint Enterprise Server 2016
View patch
microsoftpatch availablevia msrc
Product: Microsoft SharePoint Foundation 2013 Service Pack 1
View patch

Vendor Advisories (1)

microsoft2018-Jul/CVE-2018-8300Important

Microsoft SharePoint Remote Code Execution Vulnerability

Jul 10, 2018

References

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