CVE-2024-20832Known exploitationPublic exploit

Privileged code execution via missing bootloader size check

Published Mar 5, 2024 · Updated Apr 16, 2025

Heap overflow in selected Samsung Mobile Devices running Android 11 through 14 on MediaTek allows local privileged attackers to execute arbitrary code. Little Kernel's custom boot-logo JPEG parser fails to validate an image's file size before copying attacker-controlled data into heap memory. Exploitation requires privileged local access to flash a malformed JPEG into the up_param partition, enabling bootloader code execution and persistence when the device boots.

CVSS severity6.7
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap overflow in selected Samsung Mobile Devices running Android 11 through 14 on MediaTek allows local privileged attackers to execute arbitrary code. Little Kernel's custom boot-logo JPEG parser fails to validate an image's file size before copying attacker-controlled data into heap memory. Exploitation requires privileged local access to flash a malformed JPEG into the up_param partition, enabling bootloader code execution and persistence when the device boots.

The record

CVE
CVE-2024-20832
Published
Mar 5, 2024
Updated
Apr 16, 2025
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Mobile Devices
Classifications
CWE-787, T1404
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Mar 5, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Samsung Electronics Co., Ltd. · Samsung Mobile DevicesAffected versions are unavailable in this record.

Published CVSS scores

6.7NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.4Samsung MobileCVSS:3.1/AV:L/AC:H/PR:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1404Exploitation for Privilege Escalation

Public exploit references

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

Reported exploitation

Technologies

Your stack

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Your stack

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