CVE-2024-37855Public exploitNetwork attack vector

Unauthenticated root shell via exposed Telnet service

Published Jun 25, 2024 · Updated Aug 2, 2024

Code injection in Nepstech NTPL-XPON1GFEVN firmware 2.0.1 allows remote attackers to execute arbitrary code through Telnet port 2345. The router exposes a Telnet service that accepts a network connection without credentials and immediately provides a root shell. Network access to the router is the only stated gate; successful access grants root-level command execution and full control of the device.

CVSS severity8.4
High
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Nepstech NTPL-XPON1GFEVN firmware 2.0.1 allows remote attackers to execute arbitrary code through Telnet port 2345. The router exposes a Telnet service that accepts a network connection without credentials and immediately provides a root shell. Network access to the router is the only stated gate; successful access grants root-level command execution and full control of the device.

The record

CVE
CVE-2024-37855
Published
Jun 25, 2024
Updated
Aug 2, 2024
Vendor
Nepstech
Product
NTPL-XPON1GFEVN Firmware
Classifications
CWE-94, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 25, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=2.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Nepstech · NTPL-XPON1GFEVN Firmwareversion=2.0.1

Published CVSS scores

8.4CISA ADPCVSS:3.1/AV:L/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 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 exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

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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