What is CVE-2020-16950?

An information disclosure vulnerability exists when Microsoft SharePoint Server fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the user’s system. To exploit the vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The security update addresses the vulnerability by correcting how Microsoft SharePoint Server handles objects in memory.

How severe is CVE-2020-16950?

CVE-2020-16950 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-16950 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-16950?

CVE-2020-16950 affects Microsoft Sharepoint Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-16950?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-16950 published?

CVE-2020-16950 was published on 2020-10-16 and last updated on 2026-06-17.

CVE-2020-16950

CVE-2020-16950 is a medium-severity vulnerability in Microsoft Sharepoint Server with a CVSS 3.x base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.0)
CVSS v2: 4.3
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Sharepoint Server
Published: 2020-10-16
Last modified: 2026-06-17

Description

An information disclosure vulnerability exists when Microsoft SharePoint Server fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the user’s system. To exploit the vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The security update addresses the vulnerability by correcting how Microsoft SharePoint Server handles objects in memory.

Frequently asked questions

What is CVE-2020-16950?: An information disclosure vulnerability exists when Microsoft SharePoint Server fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the user’s system. To exploit the vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The security update addresses the vulnerability by correcting how Microsoft SharePoint Server handles objects in memory.
How severe is CVE-2020-16950?: CVE-2020-16950 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-16950 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-16950?: CVE-2020-16950 affects Microsoft Sharepoint Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-16950?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-16950 published?: CVE-2020-16950 was published on 2020-10-16 and last updated on 2026-06-17.

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16950

Affected products (1)

cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*

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