EUVD-2026-73267
GHSA-93h9-7vrp-g8j5
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
DHCP service accepts unauthenticated network packets; out-of-bounds read yields crash only, no confidentiality or integrity impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
5DescriptionCVE.org
Out-of-bounds read in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
AnalysisAI
Out-of-bounds read in the Windows DHCP Server role exposes all supported Windows Server versions - from Server 2012 through Server 2025 - to unauthenticated network-based denial of service. An attacker on the network can send a specially crafted DHCP packet that triggers the CWE-125 read violation, crashing or hanging the DHCP service and severing lease renewal for all network clients served by that instance. …
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 explicitly installed and running on the target Windows Server - it is not enabled by default. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.5 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) is well-aligned with the described impact: unauthenticated, zero-interaction denial of service over the network. … 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 monthly security update addressing this vulnerability, which targets the specific build-version thresholds listed above for each Windows Server release line (the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77498 maps patch KB articles to each OS version). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows Server systems (versions 2012, 2012 R2, 2016, 2019, 2022, and 2025) running the DHCP Server role and assess their network exposure to untrusted sources. …
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 weakness CWE-125 – Out-of-bounds Read
View allShare
External POC / Exploit Code
Leaving vuln.today