CVE-2026-62869

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Insufficient Verification Leading to Spoofing in Azure Entra ID

Publication date: 2026-08-11

Last updated on: 2026-08-13

Assigner: Microsoft Corporation

Description

Insufficient verification of data authenticity in Azure Entra ID allows an authorized attacker to perform spoofing over a network.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-11

Last Modified

2026-08-13

Generated

2026-09-01

AI Q&A

2026-08-12

EPSS Evaluated

2026-08-30

NVD

CVE-2026-62869

EUVD

EUVD-2026-56779

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	entra_id	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-345	The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

Attack-Flow Graph

Executive Summary

This vulnerability involves insufficient verification of data authenticity in Azure Entra ID. An authorized attacker can exploit this to perform spoofing over a network, potentially impersonating legitimate users or services.

Detection Guidance

Detection requires monitoring Azure Entra ID logs for unusual authentication patterns or spoofed requests. Check for unexpected network traffic involving Azure Entra ID endpoints and verify all authentication tokens are properly validated.

Impact Analysis

An attacker could impersonate users or services, leading to unauthorized access, data breaches, or privilege escalation. This may result in loss of sensitive data, system control, or financial harm depending on the environment.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating confidentiality requirements in GDPR and HIPAA. Non-compliance may result in legal penalties, fines, or reputational damage.

Mitigation Strategies

Apply the latest security updates from Microsoft for Azure Entra ID to address insufficient data authenticity verification. Monitor Microsoft's official security advisories for patches and follow their recommended mitigation steps.

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