CVE-2026-76388
Splunk ES <8.6.1 role flaw lets analysts modify UEBA macros to run admin searches.
Is CVE-2026-76388 being exploited?
Not confirmed. CVE-2026-76388 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.25% probability of exploitation in the next 30 days.
How severe is CVE-2026-76388?
CVE-2026-76388 is rated High with a CVSS score of 8.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-76388?
Yes. A fix has been recorded for CVE-2026-76388. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-76388 affect?
CVE-2026-76388 affects Splunk Enterprise Security <8.6.1, UEBA app, ess_analyst role, Scheduled searches/macros. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-76388?
Upgrade to Splunk ES 8.6.1 and restrict ess_analyst write access to search macros.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
ess_analyst can edit UEBA search macros so scheduled searches run as admin, enabling data access, integrity compromise and privilege escalation.
Immediate action required
- affected>= 8.6 and < 8.6.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.