CVE-2025-62204
Published: 11 November 2025
Summary
CVE-2025-62204 is a high-severity Deserialization of Untrusted Data (CWE-502) vulnerability in Microsoft Sharepoint Server. Its CVSS base score is 8.0 (High).
Operationally, ranked in the top 15.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2025-62204 is a deserialization of untrusted data vulnerability, tracked as CWE-502, that affects Microsoft Office SharePoint. The flaw received a CVSS 3.1 base score of 8.0 and permits remote code execution when an attacker supplies crafted serialized data to the application.
An authorized user with network access can exploit the issue to run arbitrary code on the SharePoint server. The attack vector requires low complexity and some user interaction, after which the attacker obtains full control over confidentiality, integrity, and availability of the target system.
The sole reference points to the Microsoft Security Response Center advisory page for this CVE, which is the authoritative source for any official patches or configuration guidance. The associated EPSS score remains low, with a current value of 0.0213 and a peak of 0.0297.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-93404
Vulnerability details
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing supplies malicious serialized objects, detecting unsafe deserialization and supporting corrective actions.
Evaluation of untrusted data handling (deserialization testing) reveals unsafe processing, which the required remediation process addresses.
Untrusted serialized data can be deserialized and observed inside the chamber, blocking gadget-chain exploitation outside the sandbox.
Validates or rejects untrusted serialized data before deserialization occurs.
Identifies and blocks malicious code introduced through deserialization of untrusted data at system boundaries.
Integrity verification of serialized information can detect tampering before deserialization occurs.
Provenance of associated data allows detection of untrusted sources before deserialization or processing occurs.