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CVE-2018-8156

18
FAUCET Score

CVE-2018-8156 is an elevation of privilege vulnerability affecting Microsoft SharePoint Server and Project Server, stemming from improper sanitization of specially crafted web requests. This medium-severity vulnerability (CVSS 5.4) requires user interaction and low privileges, allowing an attacker to achieve limited confidentiality and integrity impact. While there is no evidence of active exploitation, public exploit code, or Metasploit modules, the vulnerability has received minimal community and media attention.

Impacted Technologies

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

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
2.51%
Probability of exploitation in next 30 days
EPSS Percentile
83.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0251 is in the 98th 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 (4)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft SharePoint Enterprise Server 2016
View patch
microsoftpatch availablevia msrc
Product: Microsoft Project Server 2013 Service Pack 1 (64-bit edition)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Project Server 2010 Service Pack 2
View patch

Vendor Advisories (1)

microsoft2018-May/CVE-2018-8156Important

Microsoft SharePoint Elevation of Privilege Vulnerability

May 8, 2018

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-8156
PatchVendor Advisory
securityfocus.com / bid/104048
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040856
Third Party AdvisoryVDB Entry