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.

A critical Splunk Enterprise vulnerability tracked as CVE-2026-20253 is being exploited in attacks only days after its public disclosure.

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.