CVE-2019-20348Public exploit

Root command execution via unauthenticated UART console

Published Jan 6, 2020 · Updated Aug 5, 2024

Improper access control in the UART console of OKER G232V1 1.03.02.20161129 allows physically proximate attackers to execute root commands. The console accepts commands with root privileges after an interrupted boot sequence without authenticating the attached operator. Physical device access and identification of the UART pins are required; exploitation grants root-level command execution, access to device data, and the ability to plant a backdoor.

CVSS severity6.8
Medium
EPSS probability0.56%
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 the UART console of OKER G232V1 1.03.02.20161129 allows physically proximate attackers to execute root commands. The console accepts commands with root privileges after an interrupted boot sequence without authenticating the attached operator. Physical device access and identification of the UART pins are required; exploitation grants root-level command execution, access to device data, and the ability to plant a backdoor.

The record

CVE
CVE-2019-20348
Published
Jan 6, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 6, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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 vectorphysical
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8NIST NVDCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.2NIST NVDAV:L/AC:L/Au:N/C:C/I:C/A:C

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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

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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