CVE-2023-2790Public exploit

Credential disclosure via Telnet configuration password

Published May 18, 2023 · Updated Aug 2, 2024

Password exposure in the Telnet Service of TOTOLINK N200RE 9.3.5u.6255_B20211224 allows local users to read stored credentials. The firmware stores a Telnet password in /squashfs-root/etc_ro/custom.conf, where a local user with access can retrieve it. High local privileges are required, and the demonstrated consequence is credential disclosure rather than configuration change or service interruption.

CVSS severity5.5
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Password exposure in the Telnet Service of TOTOLINK N200RE 9.3.5u.6255_B20211224 allows local users to read stored credentials. The firmware stores a Telnet password in /squashfs-root/etc_ro/custom.conf, where a local user with access can retrieve it. High local privileges are required, and the demonstrated consequence is credential disclosure rather than configuration change or service interruption.

The record

CVE
CVE-2023-2790
Published
May 18, 2023
Updated
Aug 2, 2024
Vendor
TOTOLINK
Product
N200RE
Classifications
CWE-260, T1552.001
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. May 18, 2023CVE 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=9.3.5u.6255_B20211224

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

TOTOLINK · N200REversion=9.3.5u.6255_B20211224

Published CVSS scores

1.4VulDBAV:L/AC:L/Au:M/C:P/I:N/A:N
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
2.3VulDBCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-260Password in Configuration File
T1552.001Unsecured Credentials: Credentials In Files

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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