CVE-2026-62718: Windows DHCP Server Information Disclosure Vulnerability
Integer underflow (wrap or wraparound) in Windows DHCP Server allows an unauthorized attacker to disclose information over an adjacent network.
Other sources
Windows DHCP Server Information Disclosure Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.9418Patch KB5120418 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5499Fixed in 10.0.20348.5440Patch KB5120229 - Upgrade
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Fixed in 10.0.26100.33296Fixed in 10.0.26100.33222Patch KB5120228 - Upgrade
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Fixed in 10.0.17763.9115Patch KB5120238 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.3.9600.23337Patch KB5120386 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.2.9200.26279Patch KB5120385
Event History
Frequently Asked Questions
What is the severity of CVE-2026-62718?
The severity of CVE-2026-62718 is classified as medium with a score of 6.5.
What type of vulnerability is CVE-2026-62718?
CVE-2026-62718 is an integer underflow vulnerability in Windows DHCP Server.
Who is affected by CVE-2026-62718?
CVE-2026-62718 affects multiple versions of Microsoft Windows, including Windows 10 and various Server editions.
How can I mitigate CVE-2026-62718?
To mitigate CVE-2026-62718, ensure you apply the latest security updates and patches from Microsoft.
What impact does CVE-2026-62718 have?
CVE-2026-62718 allows an unauthorized attacker to disclose sensitive information over an adjacent network.