CVE-2024-4760

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

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

Workaround:

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

Category

6.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.06%
Vendor Advisory microchip.com
Affected: Microchip SAME70
Affected: Microchip SAMS70
Affected: Microchip SAMV70
Affected: Microchip SAMV71
Affected: Microchip SAMG55
Affected: Microchip SAM4C
Affected: Microchip SAM4S
Affected: Microchip SAM4N
Affected: Microchip SAM4E
Affected: Microchip SAM3S
Affected: Microchip SAM3N
Affected: Microchip SAM3U
Published at:
Updated at:

References

Link Tags
https://www.0x01team.com/hw_security/bypassing-microchip-atmel-sam-e70-s70-v70-v71-security/ technical description exploit
https://ww1.microchip.com/downloads/aemDocuments/documents/MCU32/ProductDocuments/SupportingCollateral/Security-Advisory-CVE-2024-4760.pdf vendor advisory

Frequently Asked Questions

What is the severity of CVE-2024-4760?
CVE-2024-4760 has been scored as a medium severity vulnerability.
How to fix CVE-2024-4760?
As a workaround for remediating CVE-2024-4760: Please contact Microchip to obtain the appropriate patch for your devices, which are available as binary code updates.
Is CVE-2024-4760 being actively exploited in the wild?
It is possible that CVE-2024-4760 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-4760?
CVE-2024-4760 affects Microchip SAME70, Microchip SAMS70, Microchip SAMV70, Microchip SAMV71, Microchip SAMG55, Microchip SAM4C, Microchip SAM4S, Microchip SAM4N, Microchip SAM4E, Microchip SAM3S, Microchip SAM3N, Microchip SAM3U.
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