Product:
Microsoft Office SharePoint
Summary
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network. This vulnerability poses a significant risk as it can lead to unauthorized access and control over affected systems. Attackers can exploit this flaw to execute arbitrary code remotely.
Details
| Severity | Base Score | CVE |
|---|---|---|
| HIGH | 8.8 | CVE-2026-35439 |
Exploitation
To exploit this vulnerability, an attacker must have authorized access to the Microsoft Office SharePoint environment. By sending specially crafted requests that include untrusted data, the attacker can trigger the deserialization process, leading to the execution of malicious code on the server. This can be done without user interaction, making it a critical threat.
Affected Products
- Microsoft Office SharePoint: A web-based collaboration platform that integrates with Microsoft Office, allowing users to create, manage, and share content.
Mitigation
To mitigate this vulnerability, it is recommended to apply the latest security updates provided by Microsoft. Additionally, organizations should review their access controls and ensure that only authorized users have access to sensitive systems. Regular security assessments can help identify and address potential vulnerabilities.