Check Point Advisories

Splunk Enterprise Arbitrary File Write (CVE-2026-20253)

Vulnerability
Protection

Check Point Reference:	CPAI-2026-7737
Date Published:	14 Jun 2026
Severity:	Critical
Last Updated:	Monday 03 August, 2026
Source:
Industry Reference:	CVE-2026-20253
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Splunk Enterprise 10.2.4 and prior Splunk Enterprise 10.0.7 and prior Splunk Cloud Platform 10.4.2604.3 and prior Splunk Cloud Platform 10.2.2510.14 and prior
Vulnerability Description	An arbitrary file write vulnerability in Splunk Enterprise allows unauthenticated users to create or truncate arbitrary files through a PostgreSQL sidecar service endpoint.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Splunk Enterprise Arbitrary File Write (CVE-2026-20253) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Web Server Enforcement Violation.
Attack Information: Splunk Enterprise Arbitrary File Write (CVE-2026-20253)