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CVE-2017-8551

23
FAUCET Score

CVE-2017-8551 describes an elevation of privilege vulnerability in Microsoft SharePoint software, specifically affecting Microsoft Project Server, due to improper sanitization of specially crafted requests, leading to a Cross-Site Scripting (XSS) vulnerability. This vulnerability has a CVSS score of 6.1 (MEDIUM), indicating it can be exploited remotely with low attack complexity, requiring user interaction, and potentially leading to low impact on confidentiality and integrity. While there is no known active exploitation (KEV) or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, suggesting awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
2013CPE matchmatch criteria
cpe:2.3:a:microsoft:project_server:2013:sp1:*:*:*:*:x64:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.26%
Probability of exploitation in next 30 days
EPSS Percentile
87.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0326 is in the 94th percentile among its peer group of 26,236 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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 Project Server 2013 Service Pack 1 (64-bit edition)
View patch

Vendor Advisories (1)

microsoft2017-Jun/CVE-2017-8551Important

Microsoft SharePoint Elevation of Privilege Vulnerability

Jun 13, 2017

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2017-8551
PatchVendor Advisory
securityfocus.com / bid/98913
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038663
Third Party AdvisoryVDB Entry