Splunk — known exploited vulnerabilities
The CISA Known Exploited Vulnerabilities catalog (KEV) lists vulnerabilities that CISA has confirmed are being exploited in the wild; U.S. federal civilian agencies are required to remediate each entry by its due date. This page joins the KEV entries for Splunk with NVD CVSS scores and CISA's ransomware-campaign flag. See our methodology or browse all CVEs.
Key findings
CISA's Known Exploited Vulnerabilities catalog lists 1 Splunk vulnerability confirmed as exploited in the wild across 1 product; none is currently flagged as used in known ransomware campaigns. All entries affect a single product: Enterprise. CISA added 1 entry in 2026 so far, compared with 0 in 2025. Across the 1 entry with an NVD CVSS score (100% of the total), the average score is 9.8; 1 entry is rated critical by NVD. The most recent addition is CVE-2026-20253 (Splunk Enterprise Missing Authentication for Critical Function Vulnerability), added on 2026-06-18.
Affected products
| Product | Entries | Share |
|---|---|---|
| Enterprise | 1 | 100% |
Entries added per year
By date added to the KEV catalog
Exploited Splunk vulnerabilities (1)
Newest first. CVSS scores from NVD where available.
| CVE | Product | Vulnerability | Date added | Ransomware | CVSS |
|---|---|---|---|---|---|
| CVE-2026-20253 | Enterprise | Splunk Enterprise Missing Authentication for Critical Function Vulnerability | 2026-06-18 | — | CRITICAL9.8 |
Source: CISA Known Exploited Vulnerabilities catalog, joined with NIST NVD CVSS data. Vendor names are normalized across spellings. Compare all vendors.