CVE-2024-4760

Voltage glitch during startup of the EEFC NVM controller can bypass the security bit

Published May 16, 2024 CVSS 3.1 · 6.3 Medium EPSS < 1% KEV · Not listed
Description
A voltage glitch during the startup of EEFC NVM controllers on Microchip SAM E70/S70/V70/V71, SAM G55, SAM 4C/4S/4N/4E, and SAM 3S/3N/3U microcontrollers allows access to the memory bus via the debug interface even if the security bit is set.

Remediation

Vendor Workaround

Please contact Microchip to obtain the appropriate patch for your devices, which are available as binary code updates.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2024-44357 A voltage glitch during the startup of EEFC NVM controllers on Microchip SAM E70/S70/V70/V71, SAM G55, SAM 4C/4S/4N/4E, and SAM 3S/3N/3U microcontrollers allows access to the memory bus via the debug interface even if the security bit is set.
History
Type Values Removed Values Added
First Time appeared Amtel
Amtel same70
Amtel sams70
Amtel samv70
Amtel samv71
CPEs cpe:2.3:a:amtel:same70:*:*:*:*:*:*:*:*
cpe:2.3:a:amtel:sams70:*:*:*:*:*:*:*:*
cpe:2.3:a:amtel:samv70:*:*:*:*:*:*:*:*
cpe:2.3:a:amtel:samv71:*:*:*:*:*:*:*:*
Vendors & Products Amtel
Amtel same70
Amtel sams70
Amtel samv70
Amtel samv71
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A voltage glitch during the startup of EEFC NVM controllers on Microchip SAM E70/S70/V70/V71 microcontrollers allows access to the memory bus via the debug interface even if the security bit is set. A voltage glitch during the startup of EEFC NVM controllers on Microchip SAM E70/S70/V70/V71, SAM G55, SAM 4C/4S/4N/4E, and SAM 3S/3N/3U microcontrollers allows access to the memory bus via the debug interface even if the security bit is set.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Microchip
Published
Updated
Jun 6, 2025, 3:08 PM
Reserved
May 10, 2024, 3:18 PM
Status
Deferred
Published
May 16, 2024, 1:15 PM
Modified
Jun 17, 2026, 8:02 AM