CVE-2025-20389

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).

CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Weakness Type (CWE)

CWE-20 Improper Input Validation

Affected Products

Vendor	Product	Versions
splunk	splunk	9.2.0 — 9.2.10
splunk	splunk	9.3.0 — 9.3.8
splunk	splunk	9.4.0 — 9.4.6
splunk	splunk	10.0.0 — 10.0.2
splunk	splunk_cloud_platform	9.3.2411 — 9.3.2411.120
splunk	splunk_cloud_platform	10.0.2503 — 10.0.2503.8
splunk	splunk_cloud_platform	10.1.2507 — 10.1.2507.6
splunk	splunk_secure_gateway	3.7.0 — 3.7.28
splunk	splunk_secure_gateway	3.8.0 — 3.8.58
splunk	splunk_secure_gateway	3.9.0 — 3.9.10

References

Advisories & Patches

https://advisory.splunk.com/advisories/SVD-2025-1208

Frequently Asked Questions

What is CVE-2025-20389? +

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). It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2025-20389? +

CVE-2025-20389 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-20389? +

CVE-2025-20389 affects products from splunk, specifically: splunk, splunk_cloud_platform, splunk_secure_gateway. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-20389? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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