Which products and versions are affected by CVE-2021-28474?

Affected: Sharepoint Foundation (Microsoft) versions 2013-sp1; Sharepoint Server (Microsoft) versions 2016, 2019. The full list is in the CVE brief.

Is CVE-2021-28474 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2021-28474 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2021-28474?

No public exploit code is known.

How urgently should CVE-2021-28474 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2021-28474

High

Microsoft SharePoint Server Remote Code Execution Vulnerability

Published May 11, 2021 · Updated Nov 21, 2024

Key Facts

Patch immediately

CVE-2021-28474 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Sharepoint Foundation (Microsoft), Sharepoint Server (Microsoft).
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 51% probability of exploitation in the next 30 days.
Fixed versions are available, including Sharepoint Foundation 15.0.5345.1000, Sharepoint Server 16.0.10374.20000, Sharepoint Server 16.0.5161.1000.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

8.8

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

51%

Higher than 98.9% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

Get the full CVE-2021-28474 brief as a PDF

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Description

Microsoft SharePoint Server Remote Code Execution Vulnerability

Affected Products

3 affected entries in total

Product	Affected versions	Fixed in
Sharepoint FoundationMicrosoft	2013-sp1	15.0.5345.1000
Sharepoint ServerMicrosoft	2016, 2019	16.0.5161.1000

Patched Releases

Sharepoint Foundation

15.0.5345.1000

Sharepoint Server

16.0.10374.20000, 16.0.5161.1000

Timeline

Publicly disclosed
May 11, 2021
Last updated
Nov 21, 2024

Weakness Type

CWE-436 Interpretation Conflict

References

FAQ

Common Questions.

Microsoft SharePoint Server Remote Code Execution Vulnerability
Affected: Sharepoint Foundation (Microsoft) versions 2013-sp1; Sharepoint Server (Microsoft) versions 2016, 2019. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Sharepoint Foundation 15.0.5345.1000, Sharepoint Server 16.0.10374.20000, Sharepoint Server 16.0.5161.1000.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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