EUVD-2026-73121
GHSA-x67f-hxm3-3wfj
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local access with low privileges required; heap overflow in kernel driver yields full C/I/A with no user interaction or elevated rights.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows Storage Spaces Controller allows an authorized attacker to execute code locally.
AnalysisAI
Heap-based buffer overflow in the Windows Storage Spaces Controller driver allows a low-privileged local attacker to execute arbitrary code, almost certainly resulting in privilege escalation to SYSTEM or kernel-level access. The flaw (CWE-122) affects a broad swath of supported Windows releases - from Windows 10 1607 through Windows 11 26H1 and Windows Server 2016 through Server 2025 - making it a high-priority patching target across both desktop and server environments. …
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 a valid low-privileged local user account on the target Windows system (PR:L per CVSS); no administrative rights are needed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 score and vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately characterizes this as a reliable local privilege escalation path: low attack complexity, no user interaction, and full C/I/A impact within the OS scope. … 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 security update corresponding to the installed Windows version. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows 10, Windows 11, and Windows Server 2016-2025 installations to identify affected systems in your environment. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today