What is the CVSS score of CVE-2025-30382?

CVE-2025-30382 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.4%.

Which versions of Sharepoint Server are affected by CVE-2025-30382?

Organizations using Deserialization of untrusted data in Microsoft Office SharePoint face notable risk from CVE-2025-30382, a insecure deserialization vulnerability rated CVSS 7.8.

How to fix or mitigate CVE-2025-30382?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Restrict deserialization to trusted data sources and implement integrity checks.

Sharepoint Server CVE-2025-30382

HIGH

Deserialization of Untrusted Data (CWE-502)

2025-05-13 secure@microsoft.com

Microsoft Deserialization Sharepoint Server

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:41 vuln.today

CVE Published

May 13, 2025 - 17:16 nvd

HIGH 7.8

DescriptionCVE.org

Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code locally.

AnalysisAI

Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Deserialization of Untrusted Data (CWE-502), which allows attackers to execute arbitrary code through malicious serialized objects. Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code locally. Affected products include: Microsoft Sharepoint Server.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Avoid deserializing untrusted data. Use safe serialization formats (JSON). Implement integrity checks and type allowlists.