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Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

MicrosoftCVE-2026-58529

Microsoft Windows 11 version 26H1: out-of-bounds read

Microsoft

CVE-2026-58529 · Published Jul 14, 2026 · updated Jul 16, 2026

High7.1
Fix: upgrade to 10.0.28000.2525 or later
Microsoft advisory

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

Affected versions

PackageAffectedFixed in
Windows 11 version 26H1
Product
>= 10.0.28000.0, < 10.0.28000.252510.0.28000.2525
Details and references
CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-125

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