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CVE-2023-24955

Microsoft SharePoint Server Code Injection

7.2 HIGHActively exploited (CISA KEV)Used in ransomwareEPSS 85.0%
  1. Published9 May 2023
  2. Added to CISA KEV26 Mar 2024
  3. Remediation due16 Apr 2024
Actively exploited (CISA KEV)

Microsoft SharePoint Server contains a code injection vulnerability that allows an authenticated attacker with Site Owner privileges to execute code remotely.

Added to KEV: 26 Mar 2024Federal remediation due: 16 Apr 2024Used in ransomware

Description

Microsoft SharePoint Server Remote Code Execution Vulnerability

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredHigh
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

Microsoft SharePoint Enterprise Server2016
Microsoft SharePoint Server2019

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2023-24955 being actively exploited?

Yes. CVE-2023-24955 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 26 Mar 2024. It has been used in ransomware campaigns.

How severe is CVE-2023-24955?

CVE-2023-24955 has a CVSS 3.1 base score of 7.2, rated high. EPSS estimates a 85.0% probability of exploitation.

Which products are affected by CVE-2023-24955?

Affected products include Microsoft SharePoint Enterprise Server, Microsoft SharePoint Server.

How do I fix CVE-2023-24955?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-24955 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.