# CVE-2025-20389: Improper Input Validation in "label" column field in Splunk Secure Gateway App

> CVE-2025-20389: Improper Input Validation in "label" column field in Splunk Secure Gateway App. CVSS 4.3 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-20389
Last updated: 2026-06-17T08:41:39Z

- Published: 2025-12-03 17:00 UTC · Updated: 2026-06-17 08:41 UTC · Assigner: cisco
- CVSS: 4.3 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- EPSS: 0.41%, 35th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-20

## Description

In Splunk Enterprise versions below 10.0.2, 9.4.6, 9.3.8, and 9.2.10, and versions below 3.9.10, 3.8.58 and 3.7.28 of the Splunk Secure Gateway app on Splunk Cloud Platform, a low-privileged user that does not hold the "admin" or "power" Splunk roles could craft a malicious payload through the \`label\` column field after adding a new device in the Splunk Secure Gateway app. This could potentially lead to a client-side denial of service (DoS).

## Affected vendors and products

- Splunk: Splunk Cloud Platform
- Splunk: Splunk Enterprise
- Splunk: Splunk Secure Gateway

## Tracked companies

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

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-20389)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-20389)
- [https://advisory.splunk.com/advisories/SVD-2025-1208](https://advisory.splunk.com/advisories/SVD-2025-1208)

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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-2025-20389 · Markdown: https://rewindex.com/cve/CVE-2025-20389.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-20389 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:17:10.082Z