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Microchip SAMA5D4 EUVDEUVD-2026-64951

| CVE-2026-18349 HIGH
Improper Protection Against Voltage and Clock Glitches (CWE-1247)
2026-08-24 Microchip GHSA-8c5x-7fmx-f5j4
7.3
CVSS 4.0 · Vendor: Microchip
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Severity by source

Vendor (Microchip) PRIMARY
7.3 HIGH
CVSS:4.0/AV:P/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/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:X/R:X/V:X/RE:X/U:X
vuln.today AI
7.1 HIGH

Physical access and specialized glitching equipment required (AV:P, AC:H); scope changes to downstream trusted systems (S:C); all CIA impacts high once glitch succeeds.

3.1 AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
4.0 AV:P/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Primary rating from Vendor (Microchip).

CVSS VectorVendor: Microchip

Attack Vector
Physical
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

2
Analysis Generated
Aug 24, 2026 - 16:51 vuln.today
CVE Published
Aug 24, 2026 - 16:07 cve.org
HIGH 7.3

DescriptionCVE.org

Improper protection against voltage and clock glitches vulnerability in Microchip SAMA5D4 allows Hardware Fault Injection.

This issue affects SAMA5D4.

AnalysisAI

Hardware fault injection via voltage and clock glitching in the Microchip SAMA5D4 ARM Cortex-A5 microprocessor enables a physically proximate attacker to subvert security-critical operations such as secure boot, cryptographic key protection, and privilege enforcement. All versions of the SAMA5D4 are affected per the vendor's CPE entry, and Microchip self-reported this vulnerability. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
technique details hidden
Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation Physical proximity to the target hardware is mandatory (AV:P); remote exploitation is not possible. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Real-world risk is substantially constrained by the physical access requirement (AV:P) and high attack complexity (AC:H). … 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 No vendor-released patch identified at time of analysis; this is a hardware-rooted vulnerability and remediation options differ from software CVEs. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Inventory all systems and devices using Microchip SAMA5D4 processors and classify by physical access risk-prioritize systems accessible to visitors or in shared facilities. …

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EUVD-2026-64951 vulnerability details – vuln.today

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