Splunk Enterprise and Cloud Platform
CVE-2023-40594: Denial of Service (DoS) via the ‘printf’ Search Function
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.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityMEDIUMCVSS 3.1 6.5
EPSS0.40%Chance of exploitation in 30 days
Public exploitNot tracked
FixAvailable
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Splunk Enterprise 8.2 | 8.2.12 or later |
| Splunk Enterprise 9.0 | 9.0.6 or later |
| Splunk Enterprise 9.1 | 9.1.1 or later |
| Splunk Cloud - | 9.0.2303.100 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
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.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.