What’s Vulnerable › Vulnerabilities

CVE-2025-20325: Sensitive Information Disclosure in the SHCConfig logging channel in Clustered Deployments in Splunk Enterprise

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-07 · updated 2026-06-17
• Weakness: CWE-200

Description

In Splunk Enterprise versions below 9.4.3, 9.3.5, 9.2.7, and 9.1.10, and Splunk Cloud Platform versions below 9.3.2411.103, 9.3.2408.113, and 9.2.2406.119, the software potentially exposes the search head cluster [splunk.secret](https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/9.4/install-splunk-enterprise-securely/deploy-secure-passwords-across-multiple-servers) key. This exposure could happen if you have a Search Head cluster and you configure the Splunk Enterprise `SHCConfig` log channel at the DEBUG logging level in the clustered deployment. <br><br>The vulnerability would require either local access to the log files or administrative access to internal indexes, which by default only the admin role receives. Review roles and capabilities on your instance and restrict internal index access to administrator-level roles. <br><br>See [Define roles on the Splunk platform with capabilities](https://docs.splunk.com/Documentation/Splunk/latest/Security/Rolesandcapabilities), [Deploy a search head cluster](https://help.splunk.com/en/splunk-enterprise/administer/distributed-search/9.4/deploy-search-head-clustering/deploy-a-search-head-cluster), [Deploy secure passwords across multiple servers](https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/9.4/install-splunk-enterprise-securely/deploy-secure-passwords-across-multiple-servers) and [Set a security key for the search head cluster](https://help.splunk.com/splunk-enterprise/administer/distributed-search/9.4/configure-search-head-clustering/set-a-security-key-for-the-search-head-cluster#id_2c54937a_736c_47b5_9485_67e9e390acfa__Set_a_security_key_for_the_search_head_cluster) for more information.

Affected products

• Splunk Enterprise: from 9.1.0 before 9.1.10; from 9.2.0 before 9.2.7; from 9.3.0 before 9.3.5; from 9.4.0 before 9.4.3 — fixed in 9.1.10, 9.2.7, 9.3.5, 9.4.3
• Splunk Cloud Platform: from 9.2.2406 before 9.2.2406.119; from 9.3.2408 before 9.3.2408.113; from 9.3.2411 before 9.3.2411.103 — fixed in 9.2.2406.119, 9.3.2408.113, 9.3.2411.103

How to fix

Upgrade to a fixed version: Splunk Enterprise 9.1.10, 9.2.7, 9.3.5, 9.4.3; Splunk Cloud Platform 9.2.2406.119, 9.3.2408.113, 9.3.2411.103. Check the vendor advisory for mitigations.

References

• https://advisory.splunk.com/advisories/SVD-2025-0709

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