CVE-2023-40594: Splunk

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

In Splunk Enterprise versions lower than 8.2.12, 9.0.6, and 9.1.1, an attacker can use the `printf` SPL function to perform a denial of service (DoS) against the Splunk Enterprise instance.

Affected products

• Splunk Splunk: from 8.2.0, before 8.2.12 (fixed in 8.2.12); from 9.0.0, before 9.0.6 (fixed in 9.0.6); version 9.1.0 only
• Splunk Splunk Cloud Platform: up to and including 9.0.2305.100

Published 2023-08-30. Last modified 2026-06-17.