Which products and versions are affected by CVE-2023-24955?

Affected: Sharepoint Enterprise Server (Microsoft) versions 2016; Sharepoint Server (Microsoft) versions 2019; Microsoft SharePoint Enterprise Server 2016 versions >= 16.0.0, among others. The full list is in the CVE brief.

Is CVE-2023-24955 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 26, 2024 and is known to be used in ransomware campaigns.

Is CVE-2023-24955 in the CISA KEV catalog?

Yes. It was added on Mar 26, 2024 with a federal remediation due date of Apr 16, 2024.

Is there a public exploit for CVE-2023-24955?

Public exploit code is available.

How urgently should CVE-2023-24955 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2023-24955

HighExploitedPublic exploit

Microsoft SharePoint Server Remote Code Execution Vulnerability

Published May 9, 2023 · Updated Oct 28, 2025

Key Facts

Patch immediately

CVE-2023-24955 is a high-severity vulnerability (CVSS 7.2 v3.1) affecting Sharepoint Enterprise Server (Microsoft), Sharepoint Server (Microsoft), Microsoft SharePoint Enterprise Server 2016 and 2 more products.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 26, 2024 and is known to be used in ransomware campaigns. Public exploit code is available.
EPSS estimates a 85% probability of exploitation in the next 30 days.
Fixed versions are available, including Microsoft SharePoint Enterprise Server 2016 16.0.5395.1000, Microsoft SharePoint Server 2019 16.0.10398.20000, Microsoft SharePoint Server Subscription Edition 16.0.16130.20420.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

7.2

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

EPSS (30-day exploit likelihood)

85%

Higher than 99.7% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings, used by ransomware

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2023-24955 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Microsoft SharePoint Server Remote Code Execution Vulnerability

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Mar 26, 2024	Apr 16, 2024	Known
Industry KEV feed	Mar 26, 2024	Apr 16, 2024	Known
CIRCL KEV	Mar 26, 2024	Apr 16, 2024	Known
ENISA EUVD	Mar 26, 2024	n/a	Not reported

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Affected Products

6 affected entries in total

Product	Affected versions	Fixed in
Sharepoint Enterprise ServerMicrosoft	2016	n/a
Sharepoint ServerMicrosoft	2019	n/a
Microsoft SharePoint Enterprise Server 2016	>= 16.0.0	16.0.5395.1000
Microsoft SharePoint Server 2019	>= 16.0.0	16.0.10398.20000
Microsoft SharePoint Server Subscription Edition	>= 16.0.0	16.0.16130.20420

Patched Releases

Microsoft SharePoint Enterprise Server 2016

16.0.5395.1000

Microsoft SharePoint Server 2019

16.0.10398.20000

Microsoft SharePoint Server Subscription Edition

16.0.16130.20420

Timeline

Publicly disclosed
May 9, 2023
Added to CISA KEV
Mar 26, 2024
Added to Industry KEV feed
Mar 26, 2024
Added to CIRCL KEV
Mar 26, 2024
Added to ENISA EUVD
Mar 26, 2024
Last updated
Oct 28, 2025

Weakness Type

CWE-94 Improper Control of Generation of Code ('Code Injection')

References

patchMicrosoft SharePoint Server Remote Code Execution Vulnerability
exploitVulnCheck exploitation report
exploitMSF sharepoint_dynamic_proxy_generator_auth_bypass_rce.rb
exploitVulnCheck exploitation report
exploitVulnCheck exploitation report

5 more references in the full CVE brief

FAQ

Common Questions.

Microsoft SharePoint Server Remote Code Execution Vulnerability
Affected: Sharepoint Enterprise Server (Microsoft) versions 2016; Sharepoint Server (Microsoft) versions 2019; Microsoft SharePoint Enterprise Server 2016 versions >= 16.0.0, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 26, 2024 and is known to be used in ransomware campaigns.
Yes. It was added on Mar 26, 2024 with a federal remediation due date of Apr 16, 2024.
Public exploit code is available.
Fixed versions are available, including Microsoft SharePoint Enterprise Server 2016 16.0.5395.1000, Microsoft SharePoint Server 2019 16.0.10398.20000, Microsoft SharePoint Server Subscription Edition 16.0.16130.20420.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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