# CVE-2026-20240: Denial of Service through coldToFrozen.sh Script in Splunk Enterprise

> CVE-2026-20240: Denial of Service through coldToFrozen.sh Script in Splunk Enterprise. CVSS 7.1 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-20240
Last updated: 2026-07-23T12:10:00Z

- Published: 2026-05-20 16:32 UTC · Updated: 2026-07-23 12:10 UTC · Assigner: cisco
- CVSS: 7.1 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS: 0.40%, 34th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-20

## Description

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.

## Affected vendors and products

- Splunk: Splunk Cloud Platform
- Splunk: Splunk Enterprise

## Tracked companies

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

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-20240)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-20240)
- [https://advisory.splunk.com/advisories/SVD-2026-0504](https://advisory.splunk.com/advisories/SVD-2026-0504)

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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-2026-20240 · Markdown: https://rewindex.com/cve/CVE-2026-20240.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-20240 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:11:49.978Z