CVE-2026-20253

Splunk — Splunk Enterprise Missing Authentication for Critical Function Vulnerability

CISA KEV · in the CISA KEV catalog since 2026-06-18

What EVULNABLE says

EVULNABLE Risk · priority 91/100 Immediate Intelligence coverage 75/90 — no pre-patch disclosure data
ExigentOverdue by 2 monthsCISA KEVActively Exploited

Why it matters: Listed in the CISA KEV catalog, and an EPSS probability of 0.969.

Out-of-Band / Urgent Remediation

The priority band answers “how soon”, not “how bad” — see Methodology for what it weighs and where it abstains.

The evidence behind it

Published measurements for CVE-2026-20253
MeasureValueSource
CVSS base score 9.8 NVD
FIRST EPSS 0.969 (99.89th pctl) FIRST
Actively exploited Confirmed CISA KEV
Ransomware campaign use Unknown or none CISA KEV
CISA remediation deadline 2026-06-21 — Overdue by 2 months CISA KEV
Intelligence coverage 75/90 — no pre-patch disclosure data

What CISA says to do

This page is an opinion about urgency. Where it and a source of record disagree, the source of record is the record.