CVE-2024-28186Public exploitNetwork attack vector

SMTP credential disclosure via unredacted exception traces

Published Mar 12, 2024 · Updated Aug 2, 2024

Information disclosure in FreeScout before 1.8.124 allows remote authenticated users to obtain SMTP credentials through a send-log request. FreeScout stores complete exception stack traces in its database and returns them from the send-log endpoint without redacting credentials passed to Swift_Transport_Esmtp_Auth_LoginAuthenticator->authenticate(). Support-agent access and a failed outbound message are required; disclosed credentials permit unauthorized email through the configured SMTP server.

CVSS severity7.1
High
EPSS probability0.55%
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 FreeScout before 1.8.124 allows remote authenticated users to obtain SMTP credentials through a send-log request. FreeScout stores complete exception stack traces in its database and returns them from the send-log endpoint without redacting credentials passed to Swift_Transport_Esmtp_Auth_LoginAuthenticator->authenticate(). Support-agent access and a failed outbound message are required; disclosed credentials permit unauthorized email through the configured SMTP server.

The record

CVE
CVE-2024-28186
Published
Mar 12, 2024
Updated
Aug 2, 2024
Vendor
FreeScout
Product
FreeScout
Classifications
CWE-532, T1552.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 12, 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=< 1.8.124

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

FreeScout · FreeScoutversion=< 1.8.124

Published CVSS scores

7.1GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1552.001Credentials 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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