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CVE-2026-69597

Last refreshed2026-10-03

Status: UPDATED  |  Advisory ID: CVE-2026-69597

Key Details

CVECVE-2026-69597
CVSS Score / Version7.1 (High) / CVSS v3.1
Updated2026-09-21
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
CVSS Proseattack vector is network; attack complexity is high; privileges required is low; user interaction is required; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected productssee table below
Classified asCWE-416 (Use After Free)

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
MicrosoftWindows 11 (version 23H2)
MicrosoftWindows 11 (version 24H2)
MicrosoftWindows 11 (version 25H2)
MicrosoftWindows 11 (version 26H1)
MicrosoftWindows Server 2025
MicrosoftWindows 11 version 23H2
MicrosoftWindows 11 Version 24H2
MicrosoftWindows 11 Version 25H2
MicrosoftWindows 11 version 26H1
MicrosoftWindows Server 2025 (Server Core installation)
SubsystemsCore Infrastructure, EWS Workstation Delivery/Virtualization
SectorsAll Sectors

What to Know

Use after free in Windows HTTP.sys allows an authorized attacker to elevate privileges over a network.

What to Do

Monitor Microsoft's web page for any future patch releases. See vendor advisory link below.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-69597
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-69597
Vendor advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69597

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