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CVE-2017-8629

20
FAUCET Score

CVE-2017-8629 is an elevation of privilege vulnerability affecting Microsoft SharePoint Server 2013 Service Pack 1, stemming from improper sanitization of specially crafted web requests, leading to a Cross-Site Scripting (XSS) vulnerability. Rated Medium (CVSS 5.4), it requires low privileges and user interaction, with a network attack vector, potentially leading to low impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in CISA's KEV catalog, though it has received some community discussion and media coverage.

Impacted Technologies

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

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
2.39%
Probability of exploitation in next 30 days
EPSS Percentile
82.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0239 is in the 98th percentile among its peer group of 15,225 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 (2)

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

Vendor Advisories (1)

microsoft2017-Sep/CVE-2017-8629Important

Microsoft SharePoint Elevation of Privilege Vulnerability

Sep 12, 2017

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2017-8629
PatchVendor Advisory
securityfocus.com / bid/100725
Third Party AdvisoryVDB Entry
securitytracker.com / id/1039329
Third Party AdvisoryVDB Entry