Voltage glitch during startup of the EEFC NVM controller can bypass the security bit
Priority LOW 29CWE-1247Published · Updated
Key facts
- Attack vector
- Physical
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00209 11th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microchip | SAME70 | all versions | — | No fix listed | CNA |
| Microchip | SAMS70 | all versions | — | No fix listed | CNA |
| Microchip | SAMV70 | all versions | — | No fix listed | CNA |
| Microchip | SAMV71 | all versions | — | No fix listed | CNA |
| Microchip | SAMG55 | all versions | — | No fix listed | CNA |
| Microchip | SAM4C | all versions | — | No fix listed | CNA |
| Microchip | SAM4S | all versions | — | No fix listed | CNA |
| Microchip | SAM4N | all versions | — | No fix listed | CNA |
| Microchip | SAM4E | all versions | — | No fix listed | CNA |
| Microchip | SAM3S | all versions | — | No fix listed | CNA |
| Microchip | SAM3N | all versions | — | No fix listed | CNA |
| Microchip | SAM3U | all versions | — | No fix listed | CNA |
- SAME70 VendorMicrochip Affected all versions Fixed in — No fix listed CNA
- SAMS70 VendorMicrochip Affected all versions Fixed in — No fix listed CNA
- SAMV70 VendorMicrochip Affected all versions Fixed in — No fix listed CNA
- SAMV71 VendorMicrochip Affected all versions Fixed in — No fix listed CNA
- SAMG55 VendorMicrochip Affected all versions Fixed in — No fix listed CNA
- SAM4C VendorMicrochip Affected all versions Fixed in — No fix listed CNA
- SAM4S VendorMicrochip Affected all versions Fixed in — No fix listed CNA
- SAM4N VendorMicrochip Affected all versions Fixed in — No fix listed CNA
- SAM4E VendorMicrochip Affected all versions Fixed in — No fix listed CNA
- SAM3S VendorMicrochip Affected all versions Fixed in — No fix listed CNA
- SAM3N VendorMicrochip Affected all versions Fixed in — No fix listed CNA
- SAM3U VendorMicrochip Affected all versions Fixed in — No fix listed CNA
CPE names CISA-ADP · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:amtel:same70:*:*:*:*:*:*:*:* | — | — | — |
| cpe:2.3:a:amtel:sams70:*:*:*:*:*:*:*:* | — | — | — |
| cpe:2.3:a:amtel:samv70:*:*:*:*:*:*:*:* | — | — | — |
| cpe:2.3:a:amtel:samv71:*:*:*:*:*:*:*:* | — | — | — |
- cpe:2.3:a:amtel:same70:*:*:*:*:*:*:*:* Versions — — ·—
- cpe:2.3:a:amtel:sams70:*:*:*:*:*:*:*:* Versions — — ·—
- cpe:2.3:a:amtel:samv70:*:*:*:*:*:*:*:* Versions — — ·—
- cpe:2.3:a:amtel:samv71:*:*:*:*:*:*:*:* Versions — — ·—
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2024-4760
- 2026-10-03 Alias added: GHSA-5mp7-g9p8-p9xx
References
More Microchip vulnerabilities
- TI-2022-18950 Microchip Technology (Microsemi) SyncServer S650 was discovered to contain a command injection vulnerability. CVSS 3.1CRITICAL 9.8
- TI-2023-28092 Improper input validation in Siemens SIMATIC IPC1047E CVSS 3.1CRITICAL 10.0
- TI-2024-19958 Microchip Harmony 3 Core library allows read and write access to RAM via a SCSI READ or WRITE command CVSS 4.0HIGH 7.0
- TI-2024-08405 Remote code Execution inTimeProvider® 4100 CVSS 4.0HIGH 8.5
- TI-2009-01524 Multiple buffer overflows in Microchip MPLAB IDE 8.30 and possibly earlier versions allow… CVSS 2.0HIGH 9.3
- TI-2020-13207 An issue was discovered in picoTCP 1.7.0. CVSS 3.1CRITICAL 9.1
Sources
- CVE-2024-4760 · CVE Program
- CVE-2024-4760 · NVD
- FIRST EPSS
- GHSA-5mp7-g9p8-p9xx · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences