SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-8629

Microsoft SharePoint Server 2013 Service Pack 1 allows an elevation of privilege vulnerability when it fails to properly sanitize a specially crafted web request to an affected SharePoint server, aka "Microsoft SharePoint XSS Vulnerability".

MEDIUM 5.4EPSS 2.39%

Does this matter?

Lower severity and a low EPSS score (2.39%). Track it; it rarely justifies an emergency change on its own.

Description

Microsoft SharePoint Server 2013 Service Pack 1 allows an elevation of privilege vulnerability when it fails to properly sanitize a specially crafted web request to an affected SharePoint server, aka "Microsoft SharePoint XSS Vulnerability".

CVSS 3.0
5.4 MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS
2.39% probability · 84th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-79
Affected
microsoft/sharepoint server
Source
secure@microsoft.com
EPSS trend
0%3%5%21 September 2026: 3.43%22 September 2026: 2.39%27 October 2026: 2.39%21 September 202627 October 2026

EPSS moved from 3.4% on 21 September 2026 to 2.4% on 27 October 2026.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.