CVE-2026-58529

Analyzed Analyzed - Analysis Complete

Out-of-bounds Read in Active Directory Federation Services

Publication date: 2026-07-14

Last updated on: 2026-07-16

Assigner: Microsoft Corporation

Description

Out-of-bounds read in Active Directory Federation Services (AD FS) allows an authorized attacker to disclose information over a network.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-07-14

Last Modified

2026-07-16

Generated

2026-08-03

AI Q&A

2026-07-15

EPSS Evaluated

2026-08-02

NVD

CVE-2026-58529

EUVD

EUVD-2026-44318

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_11_26h1	to 10.0.28000.2525 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2525 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This is an out-of-bounds read vulnerability in Active Directory Federation Services (AD FS). It allows an authorized attacker to read memory outside the intended boundaries, potentially exposing sensitive information over a network.

Impact Analysis

An attacker could exploit this to access confidential data stored or processed by AD FS, such as user credentials or internal system information. This may lead to further attacks like unauthorized access or data breaches.

Compliance Impact

This vulnerability could result in unauthorized disclosure of personal or sensitive data, violating GDPR and HIPAA requirements for data protection and confidentiality. Organizations may face legal penalties or compliance violations.

Mitigation Strategies

Apply the latest security updates from Microsoft for AD FS as soon as possible to patch the out-of-bounds read vulnerability.

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