CVE-2024-7344Public exploit

Secure Boot bypass via unsigned custom PE loading

Published Jan 14, 2025 · Updated Sep 15, 2025

Secure Boot bypass in the Reloader UEFI application allows local users to execute unsigned code during system startup. Its custom PE loader decrypts an image from a cloak.dat file in a hardcoded EFI path and executes it without the standard LoadImage signature check. Administrative access to the EFI System Partition and a reboot are required, after which pre-OS code can install a persistent bootkit.

CVSS severity8.2
High
EPSS probability1.04%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Secure Boot bypass in the Reloader UEFI application allows local users to execute unsigned code during system startup. Its custom PE loader decrypts an image from a cloak.dat file in a hardcoded EFI path and executes it without the standard LoadImage signature check. Administrative access to the EFI System Partition and a reboot are required, after which pre-OS code can install a persistent bootkit.

The record

CVE
CVE-2024-7344
Published
Jan 14, 2025
Updated
Sep 15, 2025
Vendor
Sanfong
Product
EZ-Back System
Classifications
CWE-347, T1542.003
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jan 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=* <10.3.024-20241127

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Sanfong · EZ-Back Systemversion=* <10.3.024-20241127
Computer Education System Inc. · NeoImpactversion=* <10.1.024-20241127
Signal Computer GmbH · HDD Kingversion=* <10.3.021-20241127
Greenware Technologies · GreenGuardversion=* <10.2.023-20240927
Howyar Technologies · SysReturnversion=* <10.2.02320240919
Radix Technologies · SmartRecoveryversion=* <11.2.023-20240927

Published CVSS scores

8.2NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature
T1542.003Bootkit

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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