CVE-2026-88131

Received Received - Intake

Deserialization Flaw in Microsoft Dataverse Permits Remote Code Execution

Publication date: 2026-10-08

Last updated on: 2026-10-08

Assigner: Microsoft Corporation

Description

Deserialization of untrusted data in Microsoft Dataverse allows an unauthorized attacker to execute code over a network.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-08

Last Modified

2026-10-08

Generated

2026-10-09

AI Q&A

2026-10-09

EPSS Evaluated

N/A

NVD

CVE-2026-88131

EUVD

EUVD-2026-95397

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Microsoft	Dataverse *

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-502	The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Attack-Flow Graph

Executive Summary

This vulnerability involves deserialization of untrusted data in Microsoft Dataverse. An attacker can exploit this to execute arbitrary code over a network without authentication.

Impact Analysis

An attacker could gain control of affected systems, steal data, install malware, or disrupt services. The high CVSS score indicates severe potential impact including confidentiality, integrity, and availability breaches.

Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR (data protection) and HIPAA (health data privacy) requirements. Organizations may face fines or legal consequences for non-compliance.

Mitigation Strategies

Apply the latest security updates from Microsoft for Microsoft Dataverse immediately. Isolate affected systems if possible and monitor network traffic for unusual activity. Disable unnecessary services or features that may be exposed to untrusted data.

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