How severe is CVE-2020-17115?

CVE-2020-17115 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-17115 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-17115?

CVE-2020-17115 primarily affects Microsoft Sharepoint Foundation. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-17115?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-17115 published?

CVE-2020-17115 was published on 2020-12-10 and last updated on 2026-06-17.

CVE-2020-17115

CVE-2020-17115 is a high-severity vulnerability in Microsoft Sharepoint Foundation with a CVSS 3.x base score of 8.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.0)
CVSS v2: 6.0
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Sharepoint Foundation
Published: 2020-12-10
Last modified: 2026-06-17

Description

Microsoft SharePoint Server Spoofing Vulnerability

Frequently asked questions

What is CVE-2020-17115?: Microsoft SharePoint Server Spoofing Vulnerability
How severe is CVE-2020-17115?: CVE-2020-17115 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-17115 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-17115?: CVE-2020-17115 primarily affects Microsoft Sharepoint Foundation. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-17115?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-17115 published?: CVE-2020-17115 was published on 2020-12-10 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:microsoft:sharepoint_foundation:2010:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_foundation:2013:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*

More vulnerabilities in Microsoft Sharepoint Foundation

CVE-2013-1330 — Critical (CVSS 10.0): The default configuration of Microsoft SharePoint Portal Server 2003 SP3, SharePoint Server 2007 SP3 and 2010 SP1 and…
CVE-2020-1595 — Critical (CVSS 9.9): <p>A remote code execution vulnerability exists in Microsoft SharePoint where APIs aren't properly protected from…
CVE-2020-1210 — Critical (CVSS 9.9): <p>A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source…
CVE-2023-21716 — Critical (CVSS 9.8): Microsoft Word Remote Code Execution Vulnerability
CVE-2020-1025 — Critical (CVSS 9.8): An elevation of privilege vulnerability exists when Microsoft SharePoint Server and Skype for Business Server…
CVE-2019-0604 — Critical (CVSS 9.8): A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup…

All CVEs affecting Microsoft Sharepoint Foundation →