CVE-2026-58529

HIGH

Windows Active Directory Federation Services (ADFS) Information Disclosure Vulnerability

Title source: cna
STIX 2.1

Description

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

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
Windows Active Directory Federation Services (ADFS) Information Disclosure Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58529

Scores

CVSS v3 7.1
EPSS 0.0095
EPSS Percentile 57.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-125
Status published
Products (2)
Microsoft/Windows 11 version 26H1 10.0.28000.0 - 10.0.28000.2525
microsoft/windows_11_26h1 < 10.0.28000.2525 (2 CPE variants)
Published Jul 14, 2026
Tracked Since Jul 14, 2026