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CVE-2026-62823

Windows DHCP Server Remote Code Execution Vulnerability

HIGH
8.8
CVSS Score
Published: August 11, 2026 at 05:06 PM UTC
Updated: October 28, 2026 at 08:07 PM UTC
7 products affected across 1 vendorWindows Server 2016Windows Server 2019Windows Server 2012

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Severity
HIGH8.8
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over an adjacent network.

Affected

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

Windows 10 1607· Microsoft
95%
v < 10.0.14393.9418
Affected range stops below 10.0.14393.9418, so it looks safe — our inference, not a vendor statement
Windows 10 1809· Microsoft
95%
v < 10.0.17763.9115
Affected range stops below 10.0.17763.9115, so it looks safe — our inference, not a vendor statement
Windows Server 2012· Microsoft
95%
v < 6.2.9200.262806.2.9200.06.3.9600.0r2
Affected range stops below 6.2.9200.26280, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.3.9600.23338, so it looks safe — our inference, not a vendor statement
Windows Server 2016· Microsoft
95%
v < 10.0.14393.941810.0.14393.0
Affected range stops below 10.0.14393.9418, so it looks safe — our inference, not a vendor statement
Windows Server 2019· Microsoft
95%
v < 10.0.17763.911510.0.17763.0
Affected range stops below 10.0.17763.9115, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.17763.9121, so it looks safe — our inference, not a vendor statement
Windows Server 2022· Microsoft
95%
v < 10.0.20348.544010.0.20348.0
Affected range stops below 10.0.20348.5440, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.20348.5499, 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

References (1)

Vendor AdvisoryPatch
Source: cverecord
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62823

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

8.8HIGH[email protected]
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-122

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