CVE-2024-34891Public exploitNetwork attack vector

Exchange password disclosure via DAV settings response

Published Nov 4, 2024 · Updated Jul 5, 2026

Insufficient credential protection in 1C-Bitrix Bitrix24 23.300.100 allows remote administrators to read Exchange passwords. The DAV settings page places the configured Exchange password in an exchange_password table cell returned by an HTTP GET response. Administrative access and a configured Exchange integration are required; disclosure exposes the stored credential without changing data or interrupting service.

CVSS severity6.8
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient credential protection in 1C-Bitrix Bitrix24 23.300.100 allows remote administrators to read Exchange passwords. The DAV settings page places the configured Exchange password in an exchange_password table cell returned by an HTTP GET response. Administrative access and a configured Exchange integration are required; disclosure exposes the stored credential without changing data or interrupting service.

The record

CVE
CVE-2024-34891
Published
Nov 4, 2024
Updated
Jul 5, 2026
Vendor
Bitrix24
Product
Bitrix24
Classifications
CWE-312, T1552
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

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-312Cleartext Storage of Sensitive Information
T1552Unsecured Credentials

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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