EUVD-2026-73620
GHSA-348q-cmrr-hw9f
Severity by source
AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Adjacent-only attack vector, low-privilege auth required per description; full system compromise if overflow is exploited successfully.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows DHCP Server allows an authorized attacker to execute code over an adjacent network.
AnalysisAI
Heap-based buffer overflow in the Windows DHCP Server service allows an authenticated attacker with adjacent network access to achieve remote code execution on the target system. The vulnerability (CWE-122) exists across a wide range of Windows Server and Windows client versions, from Server 2012 through Server 2025 and Windows 10/11 builds, all fixed in the July 2026 Patch Tuesday update cycle. …
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 | Exploitation requires three specific conditions: (1) The target system must have the Windows DHCP Server role or component active and running - this is not installed by default and must be deliberately configured; (2) The attacker must have adjacent network access, meaning physical or logical Layer 2 adjacency to the DHCP server (same broadcast domain, VLAN, or VPN tunnel) - internet-facing remote exploitation is not possible via this vector; (3) The attacker must be 'authorized' per the description, aligned with PR:L in the CVSS vector, meaning some form of low-privilege network authentication or presence on the network is required rather than completely anonymous access. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.0 vector (AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately reflects a serious but network-topology-limited vulnerability. … 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 the Microsoft-released security updates for the affected Windows versions, available through Windows Update, WSUS, or Microsoft Update Catalog as part of the July 2026 Patch Tuesday release cycle (see https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69847). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows DHCP Server deployments across Windows Server 2012 through 2025 and Windows 10/11 clients, then prioritize servers providing critical business functions. …
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-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today