CVE-2026-20240 PUBLISHED

Denial of Service through coldToFrozen.sh Script in Splunk Enterprise

Assigner: cisco
Reserved: 08.10.2025 Published: 20.05.2026 Updated: 20.05.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 7.1

Product Status

Vendor Splunk
Product Splunk Enterprise
Versions
  • affected from 10.2 to 10.2.2 (excl.)
  • affected from 10.0 to 10.0.5 (excl.)
  • affected from 9.4 to 9.4.11 (excl.)
  • affected from 9.3 to 9.3.12 (excl.)
Vendor Splunk
Product Splunk Cloud Platform
Versions
  • affected from 10.4.2603 to 10.4.2603.1 (excl.)
  • affected from 10.3.2512 to 10.3.2512.9 (excl.)
  • affected from 10.2.2510 to 10.2.2510.11 (excl.)
  • affected from 10.1.2507 to 10.1.2507.21 (excl.)
  • affected from 10.0.2503 to 10.0.2503.13 (excl.)
  • affected from 9.3.2411 to 9.3.2411.129 (excl.)

Credits

  • Alex Hordijk (hordalex)

References

Problem Types

  • The product does not validate or incorrectly validates input that can affect the control flow or data flow of a program. cwe