VulnerabilityBleeping Computer
9.5 — CRITICAL
CISA: Splunk Enterprise flaw actively exploited, patch by Sunday
CISA has urged U.S. federal agencies to secure their systems by Sunday against a critical Splunk Enterprise vulnerability that is being exploited in attacks. [...]
🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview
A critical Splunk Enterprise vulnerability (CVE-2026-20253) is being actively exploited in attacks, with threat actors targeting systems without authentication controls. The vulnerability allows remote attackers to create or truncate arbitrary files on vulnerable devices via a PostgreSQL sidecar service endpoint.
⚙️Technical Details
Affected Systems
Splunk EnterprisePostgreSQL
Attack Vectors
remote code execution attacksarbitrary file creation/truncation
💥Impact Assessment
Severity: critical
Who Is at Risk
U.S. federal agencies and Federal Civilian Executive Branch (FCEB) agencies
🛡️Recommended Actions
1patch vulnerable systems with the latest software release
2disable the PostgreSQL sidecar service to remove the attack surface
3monitor for suspicious activity and implement additional security controls
📦Affected Products
Splunk Enterprise (versions 10.2.0 to 10.2.3 and 10.0.0 to 10.0.6)
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