EUVD-2026-35567
GHSA-6h8v-8rff-xfh7
Severity by source
AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Out-of-bounds read in Windows DHCP Server allows an authorized attacker to disclose information locally.
AnalysisAI
Out-of-bounds read in Windows DHCP Server exposes adjacent memory contents and can crash the service, yielding both information disclosure and a high-severity denial-of-service condition on affected Windows systems. The flaw (CWE-125) is exploitable locally with low attack complexity and no user interaction, targeting systems where the DHCP Server role is installed across a broad range of Windows 10, 11, and Server editions from 2012 through 2025. No public exploit has been identified at time of analysis, and Microsoft has released patched builds via the MSRC update guide (CVE-2026-45608).
Technical ContextAI
CWE-125 (Out-of-Bounds Read) describes a condition where a program reads memory beyond the allocated buffer boundary. In the Windows DHCP Server component, the flaw likely resides in DHCP packet or configuration data parsing routines that fail to validate buffer extents before reading. The 'Buffer Overflow' tag from EUVD-2026-35567 alongside CWE-125 indicates that the memory safety failure may share root-cause characteristics with classic buffer overflows - an under-validated length field or pointer arithmetic error allowing reads into adjacent memory regions. The CVSS vector AV:L/AC:L reflects that the exploit surface is local and requires no special setup, while A:H confirms the service-crash (DoS) vector in addition to the C:L confidentiality leak. Affected products span Windows Server 2012 through 2025 and Windows 10/11 client builds, suggesting the vulnerable code exists in a shared Windows networking component even if the DHCP Server role itself is a server-only feature.
RemediationAI
Apply vendor-released patches via Windows Update or the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45608. Patched builds confirmed via EUVD-2026-35567 are: Windows Server 2025 and Server Core 10.0.26100.32995, Windows Server 2022 10.0.20348.5256, Windows Server 2019 and Server Core 10.0.17763.8880, Windows Server 2016 and Server Core 10.0.14393.9234, Windows Server 2012 R2 and Server Core 6.3.9600.23228, Windows Server 2012 and Server Core 6.2.9200.26132, Windows 11 25H2 10.0.26200.8655, Windows 11 26H1 10.0.28000.2269, Windows 11 24H2 10.0.26100.8655, Windows 11 23H2 10.0.22631.7219, Windows 10 21H2 10.0.19044.7417, Windows 10 22H2 10.0.19045.7417, Windows 10 1809 10.0.17763.8880, and Windows 10 1607 10.0.14393.9234. As a compensating control prior to patching, disable the DHCP Server role on any system where it is not operationally required - this fully eliminates the attack surface at the cost of DHCP service availability. On systems that must run DHCP Server, restrict local interactive logon and remote shell access (RDP, WinRM) to the minimum necessary administrative accounts to reduce attacker pre-positioning opportunities.
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Same weakness CWE-125 – Out-of-bounds Read
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today