CVE-2025-20370

Denial of Service (DoS) through Multiple LDAP Bind Requests in Splunk Enterprise

Severity
Medium 4.9
CVSS 3.1
Exploited
Not listed
EPSS
0.006
45.3th percentile
Discovered by
Not disclosed
Published
Oct 1, 2025
Assigned by cisco

Description

In Splunk Enterprise versions below 10.0.1, 9.4.4, 9.3.6, and 9.2.8, and Splunk Cloud Platform versions below 9.3.2411.108, 9.3.2408.118 and 9.2.2406.123, a user who holds a role that contains the high-privilege capability `change_authentication`, could send multiple LDAP bind requests to a specific internal endpoint, resulting in high server CPU usage, which could potentially lead to a denial of service (DoS) until the Splunk Enterprise instance is restarted. See https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.0/manage-splunk-platform-users-and-roles/define-roles-on-the-splunk-platform-with-capabilities and https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.0/use-ldap-as-an-authentication-scheme/configure-ldap-with-splunk-web#cfe47e31_007f_460d_8b3d_8505ffc3f0dd__Configure_LDAP_with_Splunk_Web for more information.

Weakness: CWE-400

Affected products

Vendor Product Category Matched by
Cisco Splunk Cloud Platform SIEM & Log Management cna-assigner
Cisco Splunk Enterprise SIEM & Log Management cna-assigner
Vendor-reported products (2)
  • Splunk · Splunk Enterprise
  • Splunk · Splunk Enterprise Cloud

Credit

STÖK / Fredrik Alexandersson

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