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CVE-2026-20240

Denial of Service through coldToFrozen.sh Script in Splunk Enterprise

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 10.2.2, 10.0.5, 9.4.11, 9.3.12, 10.4.2603.1, and 5 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Splunk Splunk Enterprise

    From 10.2 · fixed in 10.2.2; From 10.0 · fixed in 10.0.5; From 9.4 · fixed in 9.4.11; From 9.3 · fixed in 9.3.12

  • Splunk Splunk Cloud Platform

    From 10.4.2603 · fixed in 10.4.2603.1; From 10.3.2512 · fixed in 10.3.2512.9; From 10.2.2510 · fixed in 10.2.2510.11; From 10.1.2507 · fixed in 10.1.2507.21; From 10.0.2503 · fixed in 10.0.2503.13; From 9.3.2411 · fixed in 9.3.2411.129

References 1

advisory.splunk.com