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CVE WatchSep 8, 2026

CVE-2026-77889

Access of resource using incompatible type ('type confusion') in Windows DHCP Server allows an unauthorized attacker to deny service over a

CVSS

7.5

High

EPSS

—

KEV

—

Exploit Today

—

0-100

Published: Sep 8, 2026 · Last modified: Sep 8, 2026 · CWE-843

EPSS · 30d

Not enough EPSS history yet.

Technical description

Access of resource using incompatible type ('type confusion') in Windows DHCP Server allows an unauthorized attacker to deny service over a network.

Official references

msrc.microsoft.comhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77889

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2026-801617.8 HIG

———Acrobat Reader is affected by an Access of Resource Using Incompatible Type ('Type Confusion') vulnerability that could result in arbitrary code execution in the context of the current user. An attacker could exploit this vulnerability to execute arbitrary code. Exploitation of this issue requires user interaction in that a victim must open a malicious file.4h CVE-2026-814015.5 MED

———Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.5h CVE-2026-778907.5 HIG

———Access of resource using incompatible type ('type confusion') in Windows DHCP Server allows an unauthorized attacker to deny service over a network.4h CVE-2026-778887.5 HIG

———Access of resource using incompatible type ('type confusion') in Windows DHCP Server allows an unauthorized attacker to deny service over a network.4h CVE-2026-774997.5 HIG

———Access of resource using incompatible type ('type confusion') in Windows DHCP Server allows an unauthorized attacker to deny service over a network.5h CVE-2026-774947.5 HIG

———Access of resource using incompatible type ('type confusion') in Windows DHCP Server allows an unauthorized attacker to deny service over a network.4h