CVE-2023-25070Network attack vector

Administrator traffic interception and alteration via cleartext Telnet

Published May 10, 2023 · Updated Jan 28, 2025

Cleartext transmission in Seiko Solutions Inc. SkyBridge MB-A100/A110 4.2.0 and earlier allows remote attackers to intercept administrator traffic. When Telnet is enabled, the firmware carries administrator session data without transport encryption, exposing commands and responses to interception and alteration. Exploitation requires enabled Telnet and access to the communication path; the published impact is limited to reading or modifying administrator traffic.

CVSS severity4.8
Medium
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext transmission in Seiko Solutions Inc. SkyBridge MB-A100/A110 4.2.0 and earlier allows remote attackers to intercept administrator traffic. When Telnet is enabled, the firmware carries administrator session data without transport encryption, exposing commands and responses to interception and alteration. Exploitation requires enabled Telnet and access to the communication path; the published impact is limited to reading or modifying administrator traffic.

The record

CVE
CVE-2023-25070
Published
May 10, 2023
Updated
Jan 28, 2025
Vendor
Seiko Solutions Inc.
Product
SkyBridge MB-A100/A110
Classifications
CWE-319, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 28, 2025Record 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=firmware Ver. 4.2.0 and earlier

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Seiko Solutions Inc. · SkyBridge MB-A100/A110version=firmware Ver. 4.2.0 and earlier

Published CVSS scores

4.8CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
4.8JPCERT/CCCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
4.0JPCERT/CCAV:N/AC:H/Au:N/C:P/I:P/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A: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.

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-319Cleartext Transmission of Sensitive Information
T1557Adversary-in-the-Middle

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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