CVE-2024-4231

Root-shell access via unprotected UART interface

Published May 10, 2024 · Updated Aug 1, 2024

Improper access control in Digisol DG-GR1321 firmware 3.2.02 allows physically proximate attackers to access a root shell via UART. The serial debug interface exposes an unauthenticated root terminal after UART pins are identified, rather than enforcing access control. Physical access to hardware version 3.7L is required; successful access exposes sensitive device information and grants root-level command execution.

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 Digisol DG-GR1321 firmware 3.2.02 allows physically proximate attackers to access a root shell via UART. The serial debug interface exposes an unauthenticated root terminal after UART pins are identified, rather than enforcing access control. Physical access to hardware version 3.7L is required; successful access exposes sensitive device information and grants root-level command execution.

The record

CVE
CVE-2024-4231
Published
May 10, 2024
Updated
Aug 1, 2024
Vendor
Digisol
Product
Digisol DG-GR1321
Classifications
CWE-1191, T1059.004
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 10, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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?

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

  1. Affected versionversion=v3.2.02

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Digisol · Digisol DG-GR1321version=v3.2.02
Digisol · DG-GR1321 Firmwareversion=3.2.02

Published CVSS scores

4.6CISA-ADPCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
6.8CERT-InCVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1191On-Chip Debug and Test Interface With Improper Access Control
T1059.004Unix Shell

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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