Splunk Enterprise and Cloud Platform
CVE-2026-20240: Denial of Service through coldToFrozen.sh Script in Splunk Enterprise
In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.11, and 9.3.12, and Splunk Cloud Platform versions below 10.4.2603.1, 10.3.2512.9, 10.2.2510.11, 10.1.2507.21, 10.0.2503.13, and 9.3.2411.129, a low-privileged user that does not hold the ‘admin’ or ‘power’ Splunk roles could cause a Denial of Service by exploiting the `coldToFrozen.sh` script in the `splunk_archiver` app to rename critical Splunk directories, making the instance non-functional.<br><br>The Denial of Service is possible because of missing input validation in the `coldToFrozen.sh` script, which accepts arbitrary file paths and renames them without restricting operations to safe directories.
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Splunk Enterprise 10.2 | 10.2.2 or later |
| Splunk Enterprise 10.0 | 10.0.5 or later |
| Splunk Enterprise 9.4 | 9.4.11 or later |
| Splunk Enterprise 9.3 | 9.3.12 or later |
| Splunk Cloud Platform 10.4 | 10.4.2603.1 or later |
| Splunk Cloud Platform 10.3 | 10.3.2512.9 or later |
| Splunk Cloud Platform 10.2 | 10.2.2510.11 or later |
| Splunk Cloud Platform 10.1 | 10.1.2507.21 or later |
| Splunk Cloud Platform 10.0 | 10.0.2503.13 or later |
| Splunk Cloud Platform 9.3 | 9.3.2411.129 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.11, and 9.3.12, and Splunk Cloud Platform versions below 10.4.2603.1, 10.3.2512.9, 10.2.2510.11, 10.1.2507.21, 10.0.2503.13, and 9.3.2411.129, a low-privileged user that does not hold the ‘admin’ or ‘power’ Splunk roles could cause a Denial of Service by exploiting the `coldToFrozen.sh` script in the `splunk_archiver` app to rename critical Splunk directories, making the instance non-functional.<br><br>The Denial of Service is possible because of missing input validation in the `coldToFrozen.sh` script, which accepts arbitrary file paths and renames them without restricting operations to safe directories.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.