Improper Input Validation in "label" column field in Splunk Secure Gateway App

Advisory ID: SVD-2025-1208

CVE ID: CVE-2025-20389

Published: 2025-12-03

Last Update: 2025-12-03

CVSSv3.1 Score: 4.3, Medium

CVSSv3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CWE: CWE-20

Bug ID: VULN-46272

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).

Solution

Upgrade Splunk Enterprise to versions 10.0.2, 9.4.6, 9.3.8, 9.2.10, or higher.

Splunk is actively monitoring and patching Splunk Cloud Platform instances.

Product Status

ProductBase VersionComponentAffected VersionFix Version
Splunk Enterprise10.0Splunk Secure GatewayBelow 10.0.210.0.2
Splunk Enterprise9.4Splunk Secure GatewayBelow 9.4.69.4.6
Splunk Enterprise9.3Splunk Secure GatewayBelow 9.3.89.3.8
Splunk Enterprise9.2Splunk Secure GatewayBelow 9.2.109.2.10
Splunk Cloud Platform10.1.2507Splunk Secure GatewayBelow 10.1.2507.610.1.2507.6
Splunk Cloud Platform10.0.2503Splunk Secure GatewayBelow 10.0.2503.810.0.2503.8
Splunk Cloud Platform9.3.2411Splunk Secure GatewayBelow 9.3.2411.1209.3.2411.120
Splunk Secure Gateway3.9Below 3.9.103.9.10
Splunk Secure Gateway3.8Below 3.8.583.8.58
Splunk Secure Gateway3.7Below 3.7.283.7.28

Mitigations and Workarounds

Disable the Splunk Secure Gateway App. See Manage app and add-on objects.

Note: Splunk Mobile, Spacebridge, and Mission Control rely on functionality in the Splunk Secure Gateway app. If you do not use any of the apps, features, or functionality, as a potential mitigation, you may remove or disable the app.

Detections

None

Severity

Splunk rates this vulnerability a 4.3, Medium, with a CVSSv3.1 vector of CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

If you do not use and have never registered a device on the Splunk Secure Gateway app, there should be no impact and the severity would be informational.