CVE-2024-34887Public exploitNetwork attack vector

Credential theft via attacker-controlled LDAP connection check

Published Nov 4, 2024 · Updated Jul 5, 2026

Insufficient credential protection in Bitrix24 23.300.100 allows remote authenticated users to obtain AD/LDAP passwords via HTTP POST. The AD/LDAP module's Check Connection action accepts an attacker-controlled server address and posts the configured domain administrator password to that endpoint in cleartext. Administrative access and a configured AD/LDAP server are required; exploitation discloses the stored directory credential without altering Bitrix24 data.

CVSS severity4.9
Medium
EPSS probability0.34%
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 Bitrix24 23.300.100 allows remote authenticated users to obtain AD/LDAP passwords via HTTP POST. The AD/LDAP module's Check Connection action accepts an attacker-controlled server address and posts the configured domain administrator password to that endpoint in cleartext. Administrative access and a configured AD/LDAP server are required; exploitation discloses the stored directory credential without altering Bitrix24 data.

The record

CVE
CVE-2024-34887
Published
Nov 4, 2024
Updated
Jul 5, 2026
Vendor
Bitrix24
Product
Bitrix24
Classifications
CWE-522, T1212
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
4.9NVDCVSS:3.1/AV:N/AC:L/PR:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
T1212Exploitation for Credential Access

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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