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01 Record

CVE-2026-18349

SAMA5D44 Fault Injection Vulnerability

HighPUBLISHEDCNA: Microchip
CNA base score7.3 CVSS v4.0CVSS:4.0/AV:P/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
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02 Description

SAMA5D44 Fault Injection Vulnerability

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.18% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 7.9% of scored records. A rank, not a probability.
NVD base score
7.3 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
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
NVD analysis status
Deferred. NVD last modified this record on 2026-10-12.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-08-24 16:07Z2 MO AGO
Last updated
2026-10-27 16:40Z2 DAYS AGO
Reserved
2026-07-30
Assigning CNA
Microchip
Record state
PUBLISHED
Severity
High (CVSS 7.3)
CNA CVSS vector
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
Weaknesses
  • CWE-1247Improper Protection Against Voltage and Clock GlitchesBase
Data version
5.2
Document digest
32c6a49df39b368822409add3a58c0d8f7cecdfe11f2facf78278db27664638e

05 Affected products

VendorProductVersionsPlatforms
MicrochipSAMA5D40—

06 References

07 Remediation

Because this attack requires direct physical access to the device’s core power supply, the most effective protection is to prevent such access. Customers deploying the SAMA5D4 in security-sensitive applications should review the physical-security assumptions of their deployment and consider measures that make the core supply rail physically inaccessible. This includes avoiding exposed test points or headers on that rail and employing mechanical protections such as potting, conformal coating, shielding, or tamper-resistant enclosures to prevent attachment of fault-injection equipment.