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CVE-2026-69547

Last refreshed2026-10-03

Status: UPDATED  |  Advisory ID: CVE-2026-69547

Key Details

CVECVE-2026-69547
CVSS Score / Version8.8 (High) / CVSS v3.1
Updated2026-09-24
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Proseattack vector is network; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected productssee table below
Classified asCWE-122 (Heap-based Buffer Overflow)

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
MicrosoftWindows Server 2025
MicrosoftWindows 10 (version 1607)
MicrosoftWindows 10 (version 1809)
MicrosoftWindows Server 2012
MicrosoftWindows Server 2016
MicrosoftWindows Server 2019
MicrosoftWindows Server 2022
MicrosoftWindows 10 Version 1607
MicrosoftWindows 10 Version 1809
MicrosoftWindows Server 2016 (Server Core installation)
MicrosoftWindows Server 2019 (Server Core installation)
MicrosoftWindows Server 2025 (Server Core installation)
MicrosoftWindows Server 2012 (Server Core installation)
MicrosoftWindows Server 2012 R2
MicrosoftWindows Server 2012 R2 (Server Core installation)
SubsystemsCore Infrastructure, EWS Workstation Delivery/Virtualization
SectorsAll Sectors

What to Know

Heap-based buffer overflow in Windows DHCP Server allows an authorized attacker to execute code 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-2026-69547
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-69547
Vendor advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69547

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