CVE-2017-8569
Microsoft SharePoint Server allows an elevation of privilege vulnerability due to the way that it sanitizes a specially crafted web request to an affected SharePoint server, aka "SharePoint Server XSS Vulnerability".
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.38%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Microsoft SharePoint Server allows an elevation of privilege vulnerability due to the way that it sanitizes a specially crafted web request to an affected SharePoint server, aka "SharePoint Server XSS Vulnerability".
- CVSS 3.0
- 8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 5.38% probability · 93th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- microsoft/sharepoint server
- Source
- secure@microsoft.com
EPSS 5.4% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/99447Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038861Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8569Patch, Vendor Advisory
- http://www.securityfocus.com/bid/99447Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038861Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8569Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.