How severe is CVE-2025-59245?

CVE-2025-59245 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-59245 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-59245?

CVE-2025-59245 affects Microsoft Sharepoint Online. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-59245?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-59245 have an EU (EUVD) identifier?

Yes. CVE-2025-59245 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198371.

When was CVE-2025-59245 published?

CVE-2025-59245 was published on 2025-11-20 and last updated on 2026-06-17.

CVE-2025-59245

CVE-2025-59245 is a critical-severity vulnerability in Microsoft Sharepoint Online with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-198371
Weakness: CWE-502
Affected product: Microsoft Sharepoint Online
Published: 2025-11-20
Last modified: 2026-06-17

Description

Microsoft SharePoint Online Elevation of Privilege Vulnerability

Frequently asked questions

What is CVE-2025-59245?: Microsoft SharePoint Online Elevation of Privilege Vulnerability
How severe is CVE-2025-59245?: CVE-2025-59245 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-59245 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-59245?: CVE-2025-59245 affects Microsoft Sharepoint Online. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-59245?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-59245 have an EU (EUVD) identifier?: Yes. CVE-2025-59245 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198371.
When was CVE-2025-59245 published?: CVE-2025-59245 was published on 2025-11-20 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59245

Affected products (1)

cpe:2.3:a:microsoft:sharepoint_online:-:*:*:*:*:*:*:*

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