CVE-2026-73025

Analyzed Analyzed - Analysis Complete

Weak Authentication Bypass in Windows iSCSI

Publication date: 2026-09-08

Last updated on: 2026-09-24

Assigner: Microsoft Corporation

Description

Weak authentication in Windows iSCSI allows an unauthorized attacker to bypass a security feature over a network.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-08

Last Modified

2026-09-24

Generated

2026-09-29

AI Q&A

2026-09-09

EPSS Evaluated

2026-09-27

NVD

CVE-2026-73025

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_iscsi	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-1390	The product uses an authentication mechanism to restrict access to specific users or identities, but the mechanism does not sufficiently prove that the claimed identity is correct.

Attack-Flow Graph

Executive Summary

This vulnerability involves weak authentication in Windows iSCSI, allowing an unauthorized attacker to bypass a security feature over a network without needing authentication or user interaction.

Impact Analysis

An attacker could exploit this to bypass security controls, potentially gaining unauthorized access to systems or data, leading to data breaches or further network compromise.

Compliance Impact

This vulnerability could lead to unauthorized access, violating data protection requirements in GDPR and HIPAA, potentially resulting in legal penalties or loss of compliance certifications.

Mitigation Strategies

Apply the latest security updates from Microsoft to address the weak authentication in Windows iSCSI. Disable iSCSI if not in use and restrict network access to iSCSI services.

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