CVE-2024-34885Public exploitNetwork attack vector

Administrator SMTP credential disclosure via server-address change

Published Nov 4, 2024 · Updated Jul 5, 2026

Credential exposure in SMTP settings in Bitrix24 23.300.100 allows remote authenticated users to read stored SMTP passwords. The SMTP server edit workflow accepts an attacker-controlled server address when Apply is clicked and sends the stored password to that server in Base64 form. Administrator privileges and an existing SMTP account are required; exposure is limited to the configured SMTP credential.

CVSS severity6.8
Medium
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Credential exposure in SMTP settings in Bitrix24 23.300.100 allows remote authenticated users to read stored SMTP passwords. The SMTP server edit workflow accepts an attacker-controlled server address when Apply is clicked and sends the stored password to that server in Base64 form. Administrator privileges and an existing SMTP account are required; exposure is limited to the configured SMTP credential.

The record

CVE
CVE-2024-34885
Published
Nov 4, 2024
Updated
Jul 5, 2026
Vendor
Bitrix24
Product
Bitrix24
Classifications
CWE-522, T1555
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Jul 5, 2026Record 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=23.300.100

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Bitrix24 · Bitrix24version=23.300.100

Published CVSS scores

6.8CISA ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/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)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-522Insufficiently Protected Credentials
T1555Credentials from Password Stores

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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