CVE-2026-20240
Denial of Service through coldToFrozen.sh Script in Splunk Enterprise
HIGH 7.1
At a glance
- Source
- NVD
- EPSS
- EPSS 0.40 % · percentile 34 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Analyzed
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.
Weaknesses (CWE)
- CWE-20 — Improper Input Validation
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | cisco |
| CVSS 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · psirt@cisco.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-31138
- GCVE · GCVE-0-2026-20240
CERT-FR advisories
- CERTFR-2026-AVI-0627 — Multiples vulnérabilités dans les produits Splunk · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*≥ 9.3.0 < 9.3.12cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*≥ 9.4.0 < 9.4.11cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*≥ 10.0.0 < 10.0.5cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*≥ 10.2.0 < 10.2.2cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*≥ 9.3.2411 < 9.3.2411.129cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*≥ 10.0.2503 < 10.0.2503.13cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*≥ 10.1.2507 < 10.1.2507.21cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*≥ 10.2.2510 < 10.2.2510.11cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*≥ 10.3.2512 < 10.3.2512.9cpe:2.3:a:splunk:splunk_cloud_platform:10.4.2603:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Splunk · Splunk Enterprise | affected 10.2 < 10.2.2 ; affected 10.0 < 10.0.5 ; affected 9.4 < 9.4.11 ; affected 9.3 < 9.3.12 |
| Splunk · Splunk Cloud Platform | affected 10.4.2603 < 10.4.2603.1 ; affected 10.3.2512 < 10.3.2512.9 ; affected 10.2.2510 < 10.2.2510.11 ; affected 10.1.2507 < 10.1.2507.21 ; affected 10.0.2503 < 10.0.2503.13 ; affected 9.3.2411 < 9.3.2411.129 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |