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MEDIUM · 6.5

CVE-2026-62718

Integer underflow (wrap or wraparound) in Windows DHCP Server allows an unauthorized attacker to disclose information over an adjacent network.

Vulnerability Description

Integer underflow (wrap or wraparound) in Windows DHCP Server allows an unauthorized attacker to disclose information over an adjacent network.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
MicrosoftWindows 10 1607< 10.0.14393.9418
MicrosoftWindows 10 1809< 10.0.17763.9115
MicrosoftWindows Server 2012-
MicrosoftWindows Server 2016< 10.0.14393.9418
MicrosoftWindows Server 2019< 10.0.17763.9115
MicrosoftWindows Server 2022< 10.0.20348.5440
MicrosoftWindows Server 2025< 10.0.26100.33222

Related Weaknesses (CWE)

CWE-125CWE-191

References

FAQ

What is CVE-2026-62718?

CVE-2026-62718 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Integer underflow (wrap or wraparound) in Windows DHCP Server allows an unauthorized attacker to disclose information over an adjacent network.

How severe is CVE-2026-62718?

CVE-2026-62718 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-62718?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019.