How severe is CVE-2024-21318?

CVE-2024-21318 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-21318 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 31% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21318?

CVE-2024-21318 primarily affects Microsoft Sharepoint Server. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-21318?

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.

Does CVE-2024-21318 have an EU (EUVD) identifier?

Yes. CVE-2024-21318 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19031.

When was CVE-2024-21318 published?

CVE-2024-21318 was published on 2024-01-09 and last updated on 2026-06-17.

CVE-2024-21318

CVE-2024-21318 is a high-severity vulnerability in Microsoft Sharepoint Server with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 31% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-502.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 31% (98th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-19031
Weakness: CWE-502
Affected product: Microsoft Sharepoint Server
Published: 2024-01-09
Last modified: 2026-06-17

Description

Microsoft SharePoint Server Remote Code Execution Vulnerability

Frequently asked questions

What is CVE-2024-21318?: Microsoft SharePoint Server Remote Code Execution Vulnerability
How severe is CVE-2024-21318?: CVE-2024-21318 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-21318 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 31% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21318?: CVE-2024-21318 primarily affects Microsoft Sharepoint Server. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-21318?: 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.
Does CVE-2024-21318 have an EU (EUVD) identifier?: Yes. CVE-2024-21318 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19031.
When was CVE-2024-21318 published?: CVE-2024-21318 was published on 2024-01-09 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21318

Affected products (3)

cpe:2.3:a:microsoft:sharepoint_server:-:*:*:*:subscription:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*

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