CVE-2019-20061Network attack vector

Credential disclosure via cleartext introduction email

Published Feb 10, 2020 · Updated Aug 5, 2024

Cleartext transmission of sensitive information in MFScripts YetiShare 3.5.2 through 4.5.4 allows remote attackers to obtain initial passwords via email. The user-introduction email embeds the system-generated initial password without requiring encrypted transport, exposing it to network interception. Exploitation requires an email delivery path that remains cleartext; intercepted credentials can enable account access, while no integrity or availability impact is reported.

CVSS severity7.5
High
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext transmission of sensitive information in MFScripts YetiShare 3.5.2 through 4.5.4 allows remote attackers to obtain initial passwords via email. The user-introduction email embeds the system-generated initial password without requiring encrypted transport, exposing it to network interception. Exploitation requires an email delivery path that remains cleartext; intercepted credentials can enable account access, while no integrity or availability impact is reported.

The record

CVE
CVE-2019-20061
Published
Feb 10, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-319, T1040
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 10, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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?

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

5.0NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
T1040Network Sniffing

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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