EUVD-2026-73269
GHSA-vwx7-8888-28f6
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
DHCP operates over UDP with no authentication; unauthenticated network access suffices to trigger the crash with no user interaction.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Access of resource using incompatible type ('type confusion') in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
AnalysisAI
Type confusion (CWE-843) in the Windows DHCP Server service allows an unauthenticated remote attacker to crash the service, causing denial of service across the network. The flaw affects all major Windows Server generations from Server 2012 through Server 2025, as well as Windows 10 versions 1607 and 1809, wherever the DHCP Server role is active. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The Windows DHCP Server role must be installed and running on the target system - this is a server role not active by default on standard Windows installations, though it is commonly deployed in enterprise AD environments. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, score 7.5) accurately reflects a straightforward network-reachable DoS with no authentication required and low attack complexity. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply Microsoft's security update for CVE-2026-77499, available through Windows Update and WSUS, targeting the fixed build thresholds: Server 2012 ≥ 6.2.9200.26349, Server 2012 R2 ≥ 6.3.9600.23397, Server 2016 ≥ 10.0.14393.9512, Server 2019 ≥ 10.0.17763.9245, Server 2022 ≥ 10.0.20348.5622, Server 2025 ≥ 10.0.26100.33438. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct an inventory of all Windows systems running the DHCP Server role (Windows Server 2012 R2-2025 and Windows 10 versions 1607, 1809). …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
More in Windows 10 1607
View allWindows MSHTML component contains a remote code execution vulnerability that allows attackers to craft malicious ActiveX
<p>A remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged fi
Windows MSDT (Microsoft Support Diagnostic Tool) allows remote code execution when called via the ms-msdt URL protocol f
The SMBv1 server in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and R2 SP1; Windows 7 SP1; Windows 8.1; Windows
The Windows VBScript engine contains a remote code execution vulnerability in object handling that allows full system co
Windows Print Spooler Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no auth
The Win32k kernel-mode driver in Windows Vista through Windows Server 2016 allows local privilege escalation, exploited
Windows Search Remote Code Execution Vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely explo
Denial of service against HTTP/2 server implementations allows remote unauthenticated attackers to exhaust server resour
Windows Kernel contains a TOCTOU race condition vulnerability allowing local privilege escalation, exploited by the OilR
An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in
An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in
Same technique Memory Corruption
View allShare
External POC / Exploit Code
Leaving vuln.today