EUVD-2026-53707
GHSA-558p-f327-84r7
Severity by source
CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:X/RE:X/U:X
Local-only access (AV:L), high complexity to trigger SMBus recovery (AC:H), standard user sufficient (PR:L); kernel BSOD from user space constitutes scope change (S:C), purely availability impact.
Primary rating from Vendor (ELAN).
CVSS VectorVendor: ELAN
Lifecycle Timeline
2DescriptionCVE.org
A stack-based buffer overflow vulnerability exists in ELAN Microelectronics Corp. ELAN Smart-Pad on Windows (ETD.sys and ETDSMBus.sys). During Intel SMBus recovery, ETDSMBus.sys does not enforce an upper-bound check on the hardware-derived report count, allowing an out-of-range value to be forwarded to ETD.sys where it is used as a loop counter for a stack buffer copy without destination size validation. A local attacker with standard user privileges can trigger a kernel bugcheck (BSOD 0xF7 DRIVER_OVERRAN_STACK_BUFFER), resulting in denial of service. This issue affects ELAN Smart-Pad through ETD24.21.52.3.
AnalysisAI
Stack-based buffer overflow in ELAN Smart-Pad Windows kernel drivers ETD.sys and ETDSMBus.sys allows a local standard-privilege user to crash the entire Windows system via a kernel bugcheck (BSOD 0xF7 DRIVER_OVERRAN_STACK_BUFFER). The vulnerability is rooted in the Intel SMBus recovery code path: ETDSMBus.sys accepts a hardware-derived report count without enforcing an upper bound and forwards it to ETD.sys, where it drives an unbounded stack buffer copy. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must have a local interactive session on the target Windows machine with at minimum standard user (non-administrator) privileges - PR:L per the CVSS 4.0 vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 5.6 with vector AV:L/AC:H/AT:P/PR:L/UI:N accurately reflects a constrained but reproducible local denial-of-service. … 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 | The primary recommended action is to check the ELAN vulnerability disclosure policy at https://www.emc.com.tw/emc/tw/vulnerability-disclosure-policy and contact ELAN Microelectronics or the OEM vendor (e.g., ASUS, HP, Lenovo, or other laptop manufacturer) for an updated driver package superseding ETD24.21.52.3. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-121 – Stack-based Buffer Overflow
View allSame technique Stack Overflow
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External POC / Exploit Code
Leaving vuln.today