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CVE-2026-45602: Windows Dynamic Host Configuration Protocol (DHCP) Tampering Vulnerability

criticalCVSS 9.1CVE-2026-45602
No cwe for this issue in Windows DHCP Server allows an unauthorized attacker to perform tampering over a network.

CSIRTS triage

vendor: Microsoftproduct: Windows DHCP ServerOther
What
No cwe for this issue in Windows DHCP Server allows an unauthorized attacker to perform tampering over a network.
Who is affected
Users of Windows DHCP Server.
Urgency
Remediation is critical due to the critical severity and potential for network tampering.
Action
Apply the latest security patches immediately.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
critical — CVSS 9.1
Published
2026-06-09
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45602

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-45602coverage & exploitation statusNVD · CVE.org

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