Critical Remote Code Execution in Microsoft SharePoint (CVE-2024-38094) Deserialization Flaw
What It Is – Microsoft SharePoint contains a deserialization vulnerability (CVE‑2024‑38094) that allows an unauthenticated attacker to execute arbitrary code on the server.
Exploitability – The flaw is publicly disclosed; Microsoft has issued a security update, but proof‑of‑concept exploits are already circulating. CVSS v3.1 base score 9.8 (Critical).
Affected Products – Microsoft SharePoint Server (on‑premises) versions prior to the September 2024 security update.
Why It Matters for Trust & Control Assurance
- Vulnerability Management – Demonstrates the need for a documented, continuously monitored patch‑management process that can be presented as audit evidence.
- Secure Configuration – Highlights the importance of baseline hardening and code‑integrity controls that prevent unsafe object deserialization.
- Defensible Evidence – Enterprises must capture proof of remediation (e.g., patch logs, configuration snapshots) to satisfy multiple frameworks (NIST CSF, ISO 27001, etc.) with a single control objective.
Recommended Actions
- Inventory all on‑premises SharePoint instances and confirm they are running the September 2024 patch.
- Record patch deployment in your change‑management system to create an audit‑ready trail.
- Feed CVE‑2024‑38094 into your vulnerability‑management tool, assign a remediation deadline, and monitor compliance.
- Review deserialization handling code and apply secure‑coding guidelines to reduce future risk.
Source: CISA KEV – CVE‑2024‑38094