Medium severity · published May 16, 2024
CVE-2024-4760
Voltage glitch during startup of the EEFC NVM controller can bypass the security bit
6.3
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Physical
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 11% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SA
SAM3N · Microchip
0 · source: vendor
SA
SAM3S · Microchip
0 · source: vendor
SA
SAM3U · Microchip
0 · source: vendor
SA
SAM4C · Microchip
0 · source: vendor
SA
SAM4E · Microchip
0 · source: vendor
SA
SAM4N · Microchip
0 · source: vendor
SA
SAM4S · Microchip
0 · source: vendor
SA
SAME70 · Microchip
0 · source: vendor, CISA
SA
SAMG55 · Microchip
0 · source: vendor
SA
SAMS70 · Microchip
0 · source: vendor, CISA
SA
SAMV70 · Microchip
0 · source: vendor, CISA
SA
SAMV71 · Microchip
0 · source: vendor, CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-4760
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-4760
ww1.microchip.com
https://ww1.microchip.com/downloads/aemDocuments/documents/MCU32/ProductDocuments/SupportingCollateral/Security-Advisory-CVE-2024-4760.pdf
www.0x01team.com
https://www.0x01team.com/hw_security/bypassing-microchip-atmel-sam-e70-s70-v70-v71-security/