CVE-2020-12747Network attack vector

Heap corruption via mishandled bootloader commands

Published May 11, 2020 · Updated Aug 4, 2024

Heap-based buffer overflow in Samsung Q (10.0) bootloaders allows attackers to cause unspecified impact via specific commands. The bootloader mishandles those commands while processing them and writes beyond a heap buffer, although no public source identifies the command parser or malformed field. Affected devices use the Exynos980 (9630) or Exynos990 (9830) chipset; public sources do not establish whether corruption causes code execution, secure-boot bypass, or a crash.

CVSS severity9.8
Critical
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Samsung Q (10.0) bootloaders allows attackers to cause unspecified impact via specific commands. The bootloader mishandles those commands while processing them and writes beyond a heap buffer, although no public source identifies the command parser or malformed field. Affected devices use the Exynos980 (9630) or Exynos990 (9830) chipset; public sources do not establish whether corruption causes code execution, secure-boot bypass, or a crash.

The record

CVE
CVE-2020-12747
Published
May 11, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787
Attack vector
network
Privileges
unauthenticated

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 vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS: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.

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write

Public exploit references

No public exploit references are available in this record.

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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