CVE-2003-20001Public exploitNetwork attack vector

Unauthenticated call-record disclosure via TELNET login

Published Apr 1, 2025 · Updated Apr 4, 2025

Information disclosure in Mitel ICP VoIP 3100 devices allows remote attackers to read call activity through an unauthenticated TELNET login. During the credential wait state, the TELNET login stream interleaves concurrent SMDR output with username and password prompts instead of restricting it to an authorized session. Disclosure requires an external call during the credential wait and exposes service codes, extensions, timing, duration, line data, and dialed digits.

CVSS severity5.6
Medium
EPSS probability1.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Mitel ICP VoIP 3100 devices allows remote attackers to read call activity through an unauthenticated TELNET login. During the credential wait state, the TELNET login stream interleaves concurrent SMDR output with username and password prompts instead of restricting it to an authorized session. Disclosure requires an external call during the credential wait and exposes service codes, extensions, timing, duration, line data, and dialed digits.

The record

CVE
CVE-2003-20001
Published
Apr 1, 2025
Updated
Apr 4, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-200
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.6CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

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-200Exposure of Sensitive Information to an Unauthorized Actor

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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