Splunk Enterprise vulnerabilities: known CVEs & security history
Splunk · SIEM / observability · 6 tracked CVEs · 1 actively exploited · updated August 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all Splunk Enterprise release lines — 6 in total, with 1 actively exploited in the wild. A CVE here doesn't mean your version is affected — check Splunk Enterprise's current status and the safe version to run.
Known Splunk Enterprise CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2026-20253⚡ exploited | critical | 9.8 | 88% | 2026 |
| CVE-2026-20296 | high | 8.3 | 0% | 2026 |
| CVE-2026-20239 | high | 7.5 | 0% | 2026 |
| CVE-2026-20297 | high | 7.2 | 0% | 2026 |
| CVE-2026-20240 | medium | 6.5 | 0% | 2026 |
| CVE-2026-20298 | medium | 5.3 | 0% | 2026 |
Is my Splunk Enterprise version affected?
The list above spans every release. To know whether your version is affected — and the minimum safe version to upgrade to — check it directly.
Check your Splunk Enterprise version → · Monitor Splunk Enterprise for new CVEs →
Splunk Enterprise vulnerabilities — frequently asked
How many known vulnerabilities does Splunk Enterprise have?
IsItPatched tracks 6 CVEs for Splunk Enterprise, 1 of which is actively exploited (CISA KEV). 1 is critical-severity and 3 high-severity. These span every release line — what matters is whether the version you run is affected.
Does Splunk Enterprise have any actively-exploited vulnerabilities?
Yes — 1 Splunk Enterprise CVE is in CISA's Known Exploited Vulnerabilities catalog, meaning it is confirmed exploited in the wild. Patch it as a priority.
What is the most severe Splunk Enterprise vulnerability?
Among tracked issues, CVE-2026-20253 (CRITICAL, CVSS 9.8), which is actively exploited, ranks highest — a Missing authentication weakness.
Is Splunk Enterprise safe to use?
It depends on the version. The latest supported Splunk Enterprise release clears the known issues; older versions may still be affected. Check the exact version you run for a verdict.
CVE data aggregated from NVD, CISA KEV and EPSS (FIRST.org). Related: Splunk Enterprise security status · Splunk Enterprise end-of-life · actively-exploited CVEs. Always verify against Splunk's advisories — see our disclaimer.