CVE-2024-21741Public exploit

Firmware extraction via flash erase suppression

Published Jun 25, 2024 · Updated Mar 13, 2025

Improper access control in GigaDevice GD32E103C8T6 devices allows physically proximate attackers to extract protected flash contents. The debug unlock path reactivates full debug access after an electromagnetic fault suppresses the flash mass erase intended to protect stored data. Exploitation requires physical possession, a debug connection, electromagnetic fault-injection equipment, and precise coil placement; failed pulses can erase flash or permanently damage the device.

CVSS severity9.8
Critical
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in GigaDevice GD32E103C8T6 devices allows physically proximate attackers to extract protected flash contents. The debug unlock path reactivates full debug access after an electromagnetic fault suppresses the flash mass erase intended to protect stored data. Exploitation requires physical possession, a debug connection, electromagnetic fault-injection equipment, and precise coil placement; failed pulses can erase flash or permanently damage the device.

The record

CVE
CVE-2024-21741
Published
Jun 25, 2024
Updated
Mar 13, 2025
Vendor
GigaDevice Semiconductor Inc.
Product
GD32E103C8T6
Classifications
CWE-284
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 25, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=0 <=*

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

GigaDevice Semiconductor Inc. · GD32E103C8T6version=0 <=*

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control

Public exploit references

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Technologies

Your stack

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Your stack

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