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CVE-2017-8569

30
FAUCET Score

CVE-2017-8569 is an elevation of privilege vulnerability affecting Microsoft SharePoint Server, stemming from improper sanitization of web requests, leading to a Cross-Site Scripting (XSS) vulnerability. With a CVSS score of 8.8 (HIGH), this vulnerability is easily exploitable over the network with low privileges and no user interaction, potentially leading to high impact on confidentiality, integrity, and availability. Despite its high severity and a FAUCET Risk Score of 89/100, there is no evidence of active exploitation (not in KEV), nor are there public Metasploit or ExploitDB modules available. However, it has garnered some community discussion and media coverage, indicating awareness within the security community.

Impacted Technologies

VendorProductVersion(s)CPE
2016CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_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
5.05%
Probability of exploitation in next 30 days
EPSS Percentile
91.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0505 is in the 91st percentile among its peer group of 17,805 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 (2)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft SharePoint Enterprise Server 2016
View patch

Vendor Advisories (1)

microsoft2017-Jul/CVE-2017-8569Important

Microsoft SharePoint Elevation of Privilege Vulnerability

Jul 11, 2017

References

portal.msrc.microsoft.com / en-us/security-guidance/advisory/CVE-2017-8569
PatchVendor Advisory
securityfocus.com / bid/99447
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038861
Third Party AdvisoryVDB Entry