CVE-2026-65785

Windows DHCP Client Denial of Service Vulnerability

MEDIUM

6.5

CVSS Score

Published: August 11, 2026 at 05:05 PM UTC

Updated: October 30, 2026 at 05:20 PM UTC

4 products affected across 1 vendorWindows Server 2025Windows 11 24H2Windows 11 25H2

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Severity

MEDIUM6.5

Exploit prediction

EPSS 0.6%

SSVC

No known exploit

Description

Uncontrolled resource consumption in Windows DHCP Client allows an unauthorized attacker to deny service over an adjacent network.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Windows 11 24H2 · Microsoft

95%

v < 10.0.26100.910610.0.26100.0

Affected range stops below 10.0.26100.9106, so it looks safe — our inference, not a vendor statement

Affected range stops below 10.0.26100.9168, so it looks safe — our inference, not a vendor statement

Windows 11 25H2 · Microsoft

95%

v < 10.0.26200.910610.0.26200.0

Affected range stops below 10.0.26200.9106, so it looks safe — our inference, not a vendor statement

Affected range stops below 10.0.26200.9168, so it looks safe — our inference, not a vendor statement

Windows 11 26H1 · Microsoft

95%

v < 10.0.28000.270410.0.28000.0

Affected range stops below 10.0.28000.2704, so it looks safe — our inference, not a vendor statement

Windows Server 2025 · Microsoft

95%

v < 10.0.26100.3322210.0.26100.0

Affected range stops below 10.0.26100.33222, so it looks safe — our inference, not a vendor statement

Affected range stops below 10.0.26100.33296, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65785

References (1)

Vendor AdvisoryPatch

Source: cverecord

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65785

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUM[email protected]

Attack Vector: ADJACENT_NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-400

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