CVE-2020-12753Public exploit

Bootloader code execution via unchecked image offsets

Published May 11, 2020 · Updated Aug 4, 2024

Out-of-bounds write in LG Android bootloaders on Android 7.2 through 10 allows attackers to execute code during cold boot. The raw_resources RLE decoder calculates a framebuffer output pointer from unchecked x and y image metadata, producing a controlled arbitrary memory copy. Exploitation requires replacing raw_resources on device storage; the SBL1 path also requires a fully discharged battery, while the aboot path runs during normal logo display.

CVSS severity9.8
Critical
EPSS probability2.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in LG Android bootloaders on Android 7.2 through 10 allows attackers to execute code during cold boot. The raw_resources RLE decoder calculates a framebuffer output pointer from unchecked x and y image metadata, producing a controlled arbitrary memory copy. Exploitation requires replacing raw_resources on device storage; the SBL1 path also requires a fully discharged battery, while the aboot path runs during normal logo display.

The record

CVE
CVE-2020-12753
Published
May 11, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1658
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. May 11, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NVDCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1658Exploitation for Client Execution

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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