# CVE-2025-20370: Denial of Service (DoS) through Multiple LDAP Bind Requests in Splunk Enterprise

> CVE-2025-20370: Denial of Service (DoS) through Multiple LDAP Bind Requests in Splunk Enterprise. CVSS 4.9 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-20370
Last updated: 2026-10-18T21:10:00Z

- Published: 2025-10-01 16:07 UTC · Updated: 2026-10-18 21:10 UTC · Assigner: cisco
- CVSS: 4.9 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- EPSS: 0.56%, 46th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-400

## 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.

## Affected vendors and products

- Splunk: Splunk Enterprise
- Splunk: Splunk Enterprise Cloud

## Tracked companies

- [Splunk](https://rewindex.com/company/splunk.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-20370)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-20370)
- [https://advisory.splunk.com/advisories/SVD-2025-1005](https://advisory.splunk.com/advisories/SVD-2025-1005)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-20370 · Markdown: https://rewindex.com/cve/CVE-2025-20370.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-20370 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:15:39.532Z