Deserialization in Microsoft Sharepoint Enterprise Server 2016
CVE-2025-30378
Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code locally.
Vulnerability class: Insecure Deserialization
EPSS: 0.012 (63.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Sharepoint Enterprise Server 2016 — versions 16.0.0
- Microsoft Sharepoint Server 2019 — versions 16.0.0
- Microsoft Sharepoint Server Subscription Edition — versions 16.0.0
- Microsoft Sharepoint_server — versions 2016, 2019
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secure@microsoft.com (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-30378?
- CVE-2025-30378 is a high-severity vulnerability in Microsoft Sharepoint Enterprise Server 2016, classified under Deserialization of Untrusted Data. CVSS score: 7.0/10. Published 2025-05-13.
- How severe is CVE-2025-30378?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2025-30378 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.