What’s Vulnerable › Vulnerabilities

CVE-2020-1177

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-06-09 · updated 2026-06-17
• Weakness: CWE-79

Description

A cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server, aka 'Microsoft Office SharePoint XSS Vulnerability'. This CVE ID is unique from CVE-2020-1183, CVE-2020-1297, CVE-2020-1298, CVE-2020-1318, CVE-2020-1320.

Affected products

• Microsoft SharePoint Server: 2016
• Microsoft SharePoint Foundation 2013 Service Pack 1: 2013-sp1
• Microsoft SharePoint Server: 2019
• Microsoft SharePoint Server: 2016
• Microsoft SharePoint Foundation 2013 Service Pack 1: 2013 Service Pack 1
• Microsoft SharePoint Server: 2019

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1177
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1177

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